| Amaranthus abyssinicus L.H.Bailey | Synonym |  | WCSP (in review) | 
	
		| Amaranthus acanthobracteatus Henr. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus acanthochiton Sauer | Accepted |  | WCSP (in review) | 
	
		| Amaranthus acroglochin Spreng. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus acutilobus Uline & W.L.Bray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus adscendens auct. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus × adulterinus Thell. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus × aellenii Cacciato [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus aeneus Besser [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus aeruoides Hochst. & Steud. ex A.Rich. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus affinis Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus alaco Thell. | Unresolved |  | TRO | 
	
		| Amaranthus albiflorus Moq. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus albomarginatus Uline & W.L.Bray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus albus L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus albus Thunb. [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus albus Rodschied ex F.Dietr. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus albus var. monosepalus Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus albus var. parviflorus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus albus var. puberulus Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus albus var. pubescens (Uline & W.L.Bray) Fernald | Synonym |  | WCSP (in review) | 
	
		| Amaranthus albus var. rubicundus Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus alius K.Krause | Synonym |  | WCSP (in review) | 
	
		| Amaranthus × alleizettei Aellen [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus alopecurus Hochst. ex A.Br. & C.D.Bouché | Synonym |  | WCSP (in review) | 
	
		| Amaranthus altissimus Riddell [Invalid] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus ambigens Standl. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus amboinicus Buch.-Ham. ex Wall. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus anacardana Hook.f. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus anardana Buch.-Ham. ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus anderssonii J.T.Howell | Accepted |  | WCSP (in review) | 
	
		| Amaranthus angustifolius Lam. [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus angustifolius M.Bieb. ex Willd. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus angustifolius subsp. aschersonianus Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus angustifolius var. silvester Thell. | Unresolved |  | TRO | 
	
		| Amaranthus angustifolius var. silvestris (Villiers) Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus annectens S.F.Blake | Synonym |  | WCSP (in review) | 
	
		| Amaranthus antillensis Millsp. | Unresolved |  | TRO | 
	
		| Amaranthus aragonensis Sennen [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus arardhanus Sweet | Synonym |  | WCSP (in review) | 
	
		| Amaranthus arctioideus Perr. ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus arenicola I.M.Johnst. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus × artineanus Muschl. | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus arvensis (Forssk.) K.Krause | Synonym |  | WCSP (in review) | 
	
		| Amaranthus ascendens Loisel. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus ascendens Hornem. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus ascendens var. oleraceus (L.) Thell. ex Priszter | Synonym |  | WCSP (in review) | 
	
		| Amaranthus ascendens var. polygonoides (Moq.) Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus ascendens subsp. polygonoides (Moq.) Thell. ex Priszter | Synonym |  | WCSP (in review) | 
	
		| Amaranthus aschersonianus (Thell.) Chiov. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus asplundii Thell. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus ataco Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus atropurpureus Roxb. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus atrosanguineus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus aureus F.Dietr. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus aureus Besser | Synonym |  | WCSP (in review) | 
	
		| Amaranthus aureus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus australis (A.Gray) Sauer | Accepted |  | WCSP (in review) | 
	
		| Amaranthus bahiensis Mart. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus batalleri Sennen | Synonym |  | WCSP (in review) | 
	
		| Amaranthus bellardii Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus berchtholdii Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus berchtoldii Seidl ex Opiz | Synonym |  | WCSP (in review) | 
	
		| Amaranthus berlandieri (Moq.) Uline & W.L.Bray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus bernhardii Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus bicolor Nocca ex Willd. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus bigelowii Uline & W.L.Bray | Accepted |  | WCSP (in review) | 
	
		| Amaranthus blitoides S.Watson | Accepted |  | WCSP (in review) | 
	
		| Amaranthus blitoides var. crassius Jeps. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitoides var. densifolius Uline & W.L.Bray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitoides var. halophilus Aellen | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitoides var. reverchonii Uline & W.L.Bray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitoides var. scleropoides (Uline & W.L.Bray) Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitoides f. scleropoides (Uline & W.L.Bray) Thell. ex Probst | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitonius St.-Lag. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitum L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus blitum Rchb. ex Steud. [Illegitimate] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus blitum Moq. [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitum Baker & Clarke | Synonym |  | TRO | 
	
		| Amaranthus blitum var. angustifolius Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitum var. ascendens (Loisel.) DC. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitum var. blitum | Accepted |  | TRO | 
	
		| Amaranthus blitum subsp. emarginatus (Salzm. ex Uline & Bray) Carretero, Muñoz Garm. & Pedrol | Accepted |  | WCSP (in review) | 
	
		| Amaranthus blitum var. emarginatus (Moq. ex Uline & W.L.Bray) Lambinon | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitum var. graecizans (L.) Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitum var. nanus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitum subsp. oleraceus (L.) Costea | Accepted |  | WCSP (in review) | 
	
		| Amaranthus blitum var. polygonoides Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitum subsp. polygonoides (Zoll. ex Moq.) Carretero | Synonym |  | WCSP (in review) | 
	
		| Amaranthus blitum var. pseudogracilis (Thell.) Costea | Accepted |  | WCSP (in review) | 
	
		| Amaranthus bouchonii Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus bracteosus Uline & W.L.Bray [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus brandegeei Standl. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus brasiliensis Moq. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus × braunii Thell. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus brisbanii Kov. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus brownii Christoph. & Caum | Accepted |  | WCSP (in review) | 
	
		| Amaranthus buchtienianus Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus × budensis Priszter | Accepted |  | WCSP (in review) | 
	
		| Amaranthus bulgaricus Kov. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus bullatus Besser ex Spreng. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus californicus (Moq.) S.Watson | Accepted |  | WCSP (in review) | 
	
		| Amaranthus campestris Willd. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus canariensis Besser [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus cannabinus (L.) Sauer | Accepted |  | WCSP (in review) | 
	
		| Amaranthus cannabinus var. concatenatus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus capensis Thell. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus capensis subsp. uncinatus (Thell.) Brenan | Synonym |  | WCSP (in review) | 
	
		| Amaranthus capitatus Besser [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus caracam Besser | Synonym |  | WCSP (in review) | 
	
		| Amaranthus caracasanus Kunth | Accepted |  | WCSP (in review) | 
	
		| Amaranthus caracu Zucc. ex Steud. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus cararia Besser [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus cararu Jacq. ex Zuccagni [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus cararu Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus cardenasianus Hunz. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus carneus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus carneus Greene [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus carolinae Kov. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus carura Jacq. ex Zuccagni [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus catechu Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus caturus Roxb. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus × caturus B.Heyne ex Hook.f. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus caudatus L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus caudatus Baker & Clarke, in Dyer | Synonym |  | TRO | 
	
		| Amaranthus caudatus var. albiflorus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus caudatus var. alopecurus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus caudatus subsp. mantegazzianus (Pass.) Hanelt | Synonym |  | WCSP (in review) | 
	
		| Amaranthus caudatus var. maximus (Mill.) Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus caudatus subsp. saueri V.Jehlík | Synonym |  | WCSP (in review) | 
	
		| Amaranthus cauliflorus Link | Synonym |  | WCSP (in review) | 
	
		| Amaranthus celosioides Kunth | Accepted |  | WCSP (in review) | 
	
		| Amaranthus cernuus Besser [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus chihuahensis S.Watson | Accepted |  | WCSP (in review) | 
	
		| Amaranthus chipendalei Kov. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus chlorostachys Willd. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus chlorostachys Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus chlorostachys Willk. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus chlorostachys var. hybridus S. Watson | Synonym |  | TRO | 
	
		| Amaranthus chlorostachys var. powellii (S.Watson) Priszter | Synonym |  | WCSP (in review) | 
	
		| Amaranthus chlorostachys var. pseudoretroflexus Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus circinnatus Poir. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus clementii Domin | Accepted |  | WCSP (in review) | 
	
		| Amaranthus cochleitepalus Domin | Accepted |  | WCSP (in review) | 
	
		| Amaranthus coesius F.Dietr. ex Moq. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus commutatus A.Kern. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus congestus C.C.Towns. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus coracanus Mart. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus crassipes Schltdl. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus crassipes var. warnockii (I.M.Johnst.) Henrickson | Accepted |  | WCSP (in review) | 
	
		| Amaranthus crispus (Lesp. & Thévenau) A.Terracc. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus crispus Lesp. & Thev. | Unresolved |  | TRO | 
	
		| Amaranthus cristatus Noronha | Synonym |  | WCSP (in review) | 
	
		| Amaranthus cristulatus Speg. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus crocatus Besser [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus cruentus L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus cruentus var. patulus (Bertol.) Lambinon | Synonym |  | WCSP (in review) | 
	
		| Amaranthus curvifolius Spreng. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus cuspidatus Vis. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus cuspidifolius Domin | Accepted |  | WCSP (in review) | 
	
		| Amaranthus deflexus L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus deflexus var. rufescens (Godr.) Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus deflexus f. rufescens (Godr.) Thell. & Probst | Synonym |  | WCSP (in review) | 
	
		| Amaranthus delilei Richt. & Loret | Synonym |  | WCSP (in review) | 
	
		| Amaranthus desfontanii Kov. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus diacanthus Raf. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus diandrus Spreng. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus diffusus Dulac. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus dinteri Schinz | Accepted |  | WCSP (in review) | 
	
		| Amaranthus dinteri subsp. brevipetiolatus Brenan | Synonym |  | WCSP (in review) | 
	
		| Amaranthus dinteri var. uncinatus Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus dioicus Michx. ex Moq. | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus divaricatus Andrz. ex Lindem. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus × dobrogensis Morariu [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus dubius Mart. [Invalid] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus dubius K.Krause [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus dubius Mart. ex Thell. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus dubius var. flexuosus Thell. | Synonym |  | TRO | 
	
		| Amaranthus dubius var. leptostachys Thell. | Synonym |  | TRO | 
	
		| Amaranthus dubius var. xanthostachys Thell. | Synonym |  | TRO | 
	
		| Amaranthus dussii Sprenger | Synonym |  | WCSP (in review) | 
	
		| Amaranthus × edouardii Sennen [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus edulis Michx. ex Moq. | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus edulis Speg. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus edulis var. spadiceus Hunz. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus emarginatus Salzm. ex Uline & Bray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus emarginatus Salzm. ex Moq. | Synonym |  | TRO | 
	
		| Amaranthus emarginatus subsp. pseudogracilis (Thell.) Hügin | Synonym |  | WCSP (in review) | 
	
		| Amaranthus enervis F.Muell. ex Benth. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus enervis (F.Muell.) Kov. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus esculentus Besser ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus eugenii Sennen | Synonym |  | WCSP (in review) | 
	
		| Amaranthus farinaceus Roxb. ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus fasciatus Roxb. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus fatine Mart. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus × filicaulis Sennen [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus fimbriatus (Torr.) Benth. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus fimbriatus var. denticulatus Uline & W.L.Bray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus flavescens Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus flavus L. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus flexuosus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus floridanus (S.Watson) Sauer | Accepted |  | WCSP (in review) | 
	
		| Amaranthus floridus Benth. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus frumentaceus Buch.-Ham. ex Roxb. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus frutescens Dum.Cours. [Illegitimate] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus frutescens Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus furcatus J.T.Howell | Accepted |  | WCSP (in review) | 
	
		| Amaranthus × galii Sennen & Gonzalo [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus gangeticus L. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus gangeticus Wall. [Invalid] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus gangeticus var. angustior L.H.Bailey | Synonym |  | WCSP (in review) | 
	
		| Amaranthus giganteus Besser [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus giganteus L'Hér. ex Moq. | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus globosa L. | Unresolved |  | TRO | 
	
		| Amaranthus glomeratus Posp. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus gracilentus H.W.Kung | Synonym |  | WCSP (in review) | 
	
		| Amaranthus gracilis Desf. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus gracilis Desf. ex Poir. | Synonym |  | TRO | 
	
		| Amaranthus graecizans L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus graecizans Cutanda | Synonym |  | WCSP (in review) | 
	
		| Amaranthus graecizans subsp. aschersonianus (Thell.) Costea, D.M. Brenner & Tardif | Synonym |  | TRO | 
	
		| Amaranthus graecizans var. blitum (L.) Kuntze | Synonym |  | WCSP (in review) | 
	
		| Amaranthus graecizans var. pachytepalus Aellen | Synonym |  | WCSP (in review) | 
	
		| Amaranthus graecizans var. pubescens Uline & W.L.Bray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus graecizans var. silvestris (Vill.) Asch. & Schweinf. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus graecizans subsp. silvestris (Vill.) Brenan | Accepted |  | WCSP (in review) | 
	
		| Amaranthus graecizans subsp. thellungianus (Nevski ex Vassilcz.) Gusev | Synonym |  | WCSP (in review) | 
	
		| Amaranthus grandiflorus (J.M.Black) J.M.Black | Accepted |  | WCSP (in review) | 
	
		| Amaranthus greggii S.Watson | Accepted |  | WCSP (in review) | 
	
		| Amaranthus greggii var. muelleri Uline & W.L.Bray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus guadeloupensis Voss | Synonym |  | WCSP (in review) | 
	
		| Amaranthus guadelupensis Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus haughtii Standl. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus hecticus Willd. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hierichuntinus Vis. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus × hungaricus Soó [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus hunzikeri N.Bayón | Accepted |  | WCSP (in review) | 
	
		| Amaranthus huttonii H.J.Veitch | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus hybridus Vell. [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus K.Krause [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus hybridus f. aciculatus Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. batalleri (Sennen) Carretero | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. bellardii Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus subsp. bouchonii (Thell.) O.Bolòs & Vigo | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. chlorostachys (Willd.) Beck | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. chlorostachys (Willd.) Thell. | Synonym |  | TRO | 
	
		| Amaranthus hybridus subsp. cruentus (L.) Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. densus Farw. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. erythrostachys Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. hecticus (Willd.) Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus f. hypochondiacus (L.) B.L. Rob. | Synonym |  | TRO | 
	
		| Amaranthus hybridus f. hypochondriacus (L.) H.Rob. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. hypochondriacus (L.) H.Rob. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus subsp. hypochondriacus (L.) Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus subsp. incurvatus (Trimen ex Gren. & Gord.) Brenan | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. laetus (Willd.) Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. leucocarpus (S.Watson) Hunz. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. paniculatus (L.) Uline & W.L.Bray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. paniculatus (L.) Thell. | Synonym |  | TRO | 
	
		| Amaranthus hybridus var. patulus (Bertol.) Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus subsp. patulus (Bertol.) Carretero | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. pergaminensis Covas | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus subsp. powellii (S.Watson) Karlsson | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. prostratus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus f. pseudoretroflexus (Thell.) Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. pseudoretroflexus (Thell.) Carretero | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. quitensis (Kunth) Covas | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus subsp. quitensis (Kunth) Costea & Carretero | Accepted |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. rubricaulis Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hybridus var. sanguineus (L.) Farw. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hypochondriacus L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus hypochondriacus var. macrostachys Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hypochondriacus var. monstrosus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hypochondriacus var. powellii (S.Watson) Pedersen | Accepted |  | WCSP (in review) | 
	
		| Amaranthus hypochondriacus var. racemosus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus hypochondriacus var. tortuosus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus inamoenus Willd. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus incarnatus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus incomptus Willd. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus incurvatus Trimen ex Gren. & Gord. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus intermedius Guss. ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus interruptus R.Br. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus × jansen-wachterianus Thell. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus japonicus Houtt. ex Willd. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus japonicus Houtt. ex Steud. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus johnstonii Kov. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus jonesii (Uline & W.L.Bray) Kov. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus kloosianus Hunz. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus lacteus auct. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus laetus Willd. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lanatus Dum.Cours. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lanceolatus Roxb. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lancifolius Roxb. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lancifolius Delile ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus laxiflorus Comelli ex Pollini | Synonym |  | WCSP (in review) | 
	
		| Amaranthus leptostachyus Benth. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus lepturus S.F.Blake | Accepted |  | WCSP (in review) | 
	
		| Amaranthus leucanthus Raf. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus leucocarpus S.Watson | Synonym |  | WCSP (in review) | 
	
		| Amaranthus leucospermus S.Watson | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lineatus R.Br. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus littoralis Hornem. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus littoralis Bernh. ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lividus L. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lividus Roxb. [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lividus Hook.f. [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lividus var. ascendens (Loisel.) Hayw. & Druce | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lividus subsp. ascendens (Loisel.) Heukels | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lividus subsp. ascendens Heukels. | Synonym |  | TRO | 
	
		| Amaranthus lividus var. ascendens Thell. | Synonym |  | TRO | 
	
		| Amaranthus lividus subsp. lividus | Synonym |  | TRO | 
	
		| Amaranthus lividus subsp. oleraceus (L.) Soó | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lividus var. polygonoides (Moq.) Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lividus subsp. polygonoides (Moq.) Probst | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lividus f. pseudogracilis Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus lombardoi Hunz. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus looseri Suess. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus macrocarpus Benth. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus macrocarpus var. pallidus Benth. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus macrocaulos Poir. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus macrostachyus Mérat ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus major Salzm. ex Moq. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus mangostanus L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus mangostanus Blanco | Synonym |  | WCSP (in review) | 
	
		| Amaranthus mantegazzianus Pass. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus margaritae Dammer [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus × mauritii Sennen [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus maximus Mill. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus melancholicus L. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus melancholicus var. obovatus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus melancholicus var. parvifolius Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus melancholicus var. tricolor (L.) Lam. ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus miamiensis Riddell [Invalid] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus microphyllus Shinners [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus minimus Standl. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus minor Gray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus minor (Moq.) Sennen | Synonym |  | WCSP (in review) | 
	
		| Amaranthus minutus Lesch. ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus mitchellii Benth. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus mitchellii var. grandiflorus J.M.Black | Synonym |  | WCSP (in review) | 
	
		| Amaranthus mitchellii var. strictifolius Domin | Synonym |  | WCSP (in review) | 
	
		| Amaranthus monstrosus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus × monteluccii Cacciato [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus montevidensis Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus × moquinii Sennen [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus morosus Rchb. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus mucronatus Poir. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus mucronatus Hook.f. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus muelleri (Uline & W.L.Bray) Kov. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus muricatus (Gillies ex Moq.) Hieron. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus myrianthus Standl. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus neglectus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus nepalensis Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus nettii Kov. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus obcordatus (A.Gray) Standl. | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus obovatus S.Watson | Synonym |  | WCSP (in review) | 
	
		| Amaranthus obtusiflorus (Mart.) Kov. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus officinalis Gromov ex Trautv. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus oleraceus L. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus oleraceus Rodschied | Synonym |  | WCSP (in review) | 
	
		| Amaranthus oleraceus Roxb. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus olitorius Besser | Synonym |  | WCSP (in review) | 
	
		| Amaranthus × ozanonii Piszter | Accepted |  | WCSP (in review) | 
	
		| Amaranthus pachystachys Rchb. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus pallidiflorus F.Muell. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus pallidiflorus var. viridiflorus Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus pallidus M.Bieb. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus palmeri S.Watson | Accepted |  | WCSP (in review) | 
	
		| Amaranthus palmeri var. glomeratus Uline & W.L.Bray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus paniculatus L. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus paniculatus var. cruentus (L.) Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus paniculatus var. longispicatus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus paniculatus var. monstrosus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus paniculatus var. sanguineus Regel | Synonym |  | WCSP (in review) | 
	
		| Amaranthus paniculatus var. sanguineus (L.) Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus paniculatus var. speciosus L.H.Bailey | Synonym |  | WCSP (in review) | 
	
		| Amaranthus paniculatus var. strictus (Willd.) Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus paolii Chiov. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus paraguayensis Parodi | Accepted |  | WCSP (in review) | 
	
		| Amaranthus parisiensis Schenk [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus × parodii Thell. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus parodii Standl. [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus parvulus Peter | Accepted |  | WCSP (in review) | 
	
		| Amaranthus patulus Bertol. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus patulus f. multispiculatus (Sennen) Priszter | Synonym |  | WCSP (in review) | 
	
		| Amaranthus patulus var. multispiculatus Sennen | Synonym |  | WCSP (in review) | 
	
		| Amaranthus pendulinus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus pendulus Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus perennis Bellardi ex Colla | Synonym |  | WCSP (in review) | 
	
		| Amaranthus persicarioides Poir. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus persimilis Hunz. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus peruvianus (Schauer) Standl. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus × polgarianus Priszter & Kárpáti [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus polychroa Raeusch. | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus polyflagellus Spreng. ex Moq. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus polygamus L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus polygamus Roxb. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus polygamus Thwaites | Synonym |  | WCSP (in review) | 
	
		| Amaranthus polygonoides L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus polygonoides Roxb. [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus polygonoides Zoll. ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus polygonoides Zoll. | Synonym |  | TRO | 
	
		| Amaranthus polygonoides subsp. berlandieri (Moq.) Thell. | Accepted |  | TRO | 
	
		| Amaranthus polystachyus Willd. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus polystachyus Buch.-Ham. ex Wall. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus powellii S.Watson | Accepted |  | WCSP (in review) | 
	
		| Amaranthus powellii subsp. bouchonii (Thell.) Costea & Carretero | Accepted |  | WCSP (in review) | 
	
		| Amaranthus praetermissus Brenan | Accepted |  | WCSP (in review) | 
	
		| Amaranthus pringlei S.Watson | Accepted |  | WCSP (in review) | 
	
		| Amaranthus × probstii Thell. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus prostratus Balb. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus prostratus T.Bastard [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus pseudoretroflexus (Thell.) Almq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus pubescens (Uline & W.L.Bray) Rydb. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus pumilus Raf. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus purgans Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus purpureus Nieuwl. | Synonym |  | TRO | 
	
		| Amaranthus pyramidalis Noronha | Synonym |  | WCSP (in review) | 
	
		| Amaranthus quitensis Kunth | Synonym |  | WCSP (in review) | 
	
		| Amaranthus quitensis f. rufescens Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus quitensis var. stuckertianus Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus × ralletii Contré | Synonym |  | WCSP (in review) | 
	
		| Amaranthus recurvatus Desf. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus retroflexus L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus retroflexus var. chlorostachys A. Gray | Synonym |  | TRO | 
	
		| Amaranthus retroflexus var. delilei (Richt. & Loret) Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus retroflexus subsp. delilei (Richt. & Loret) Tzvelev | Synonym |  | WCSP (in review) | 
	
		| Amaranthus retroflexus var. hybridus A. Gray | Synonym |  | TRO | 
	
		| Amaranthus retroflexus var. powellii (S.Watson) B.Boivin | Synonym |  | WCSP (in review) | 
	
		| Amaranthus retroflexus var. pseudoretroflexus (Thell.) B.Boivin | Synonym |  | WCSP (in review) | 
	
		| Amaranthus retroflexus subsp. quitensis (Kunth) O.Bolòs & Vigo | Synonym |  | WCSP (in review) | 
	
		| Amaranthus retroflexus var. rubricaulis Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus retroflexus f. rubricaulis Thell. ex Probst | Synonym |  | WCSP (in review) | 
	
		| Amaranthus retroflexus var. salicifolius I.M.Johnst. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus retroflexus x rudis | Unresolved |  | TRO | 
	
		| Amaranthus reverchonii (Uline & W.L.Bray) Kov. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus rhombeus R.Br. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus rigidus Schult. ex Steud. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus rosengurttii Hunz. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus rotundifolius Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus roxburghianus H.W.Kung | Accepted |  | WCSP (in review) | 
	
		| Amaranthus roxburgianus Nevski | Synonym |  | WCSP (in review) | 
	
		| Amaranthus roxburgianus var. angustifolius (Moq.) N.C.Nair | Synonym |  | WCSP (in review) | 
	
		| Amaranthus roxburgianus var. aschersonianus (Thell.) N.C.Nair | Synonym |  | WCSP (in review) | 
	
		| Amaranthus rubescens Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus rubra K.Krause [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus ruderalis Koch ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus rudis J.D.Sauer | Synonym |  | WCSP (in review) | 
	
		| Amaranthus rudis x hybridus | Unresolved |  | TRO | 
	
		| Amaranthus × ruebelii Thell. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus rugulosus (J.T.Howell) Kov. | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus salicifolius H.J.Veitch | Synonym |  | WCSP (in review) | 
	
		| Amaranthus sanguineus L. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus sanguineus Vell. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus sanguinolentus Schrad. ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus scandens L.f. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus scariosus Benth. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus schinzianus Thell. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus scleranthoides (Andersson) Andersson | Accepted |  | WCSP (in review) | 
	
		| Amaranthus scleranthoides f. abingdonensis A.Stewart | Synonym |  | WCSP (in review) | 
	
		| Amaranthus scleranthoides f. albemarlensis A.Stewart | Synonym |  | WCSP (in review) | 
	
		| Amaranthus scleranthoides f. typica J.T.Howell | Synonym |  | WCSP (in review) | 
	
		| Amaranthus sclerantoides f. abingdonensis Stewart | Synonym |  | TRO | 
	
		| Amaranthus sclerantoides f. albemarlensis Stewart | Synonym |  | TRO | 
	
		| Amaranthus sclerantoides f. chathamensis B.L. Rob. & Greenm. | Synonym |  | TRO | 
	
		| Amaranthus sclerantoides f. hoodensis B.L. Rob. & Greenm. | Synonym |  | TRO | 
	
		| Amaranthus sclerantoides f. rugulosus Howell | Synonym |  | TRO | 
	
		| Amaranthus scleropoides Uline & W.L.Bray | Accepted |  | WCSP (in review) | 
	
		| Amaranthus silvestris Vill. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus × soproniensis Priszter & Kárpáti | Accepted |  | WCSP (in review) | 
	
		| Amaranthus sparganicephalus Thell. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus spathulatus Desf. ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus speciosus Sims | Synonym |  | WCSP (in review) | 
	
		| Amaranthus spicatus Lam. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus spicatus Rchb. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus spicatus Wirzén | Synonym |  | WCSP (in review) | 
	
		| Amaranthus spinosus L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus spinosus var. basiscissus Thell. | Synonym |  | TRO | 
	
		| Amaranthus spinosus var. circumscissus Thell. | Synonym |  | TRO | 
	
		| Amaranthus spinosus var. indehiscens Thell. | Synonym |  | TRO | 
	
		| Amaranthus spinosus f. inermis Lauterb. & K.Schum. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus spinosus var. purpurascens Moq. | Synonym |  | TRO | 
	
		| Amaranthus spinosus var. pygmaeus Hassk. | Synonym |  | TRO | 
	
		| Amaranthus spinosus var. rubricaulis Hassk. | Synonym |  | TRO | 
	
		| Amaranthus spinosus var. viridicaulis Hassk. | Synonym |  | TRO | 
	
		| Amaranthus squamulatus (Andersson) B.L.Rob. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus squarrulosus (Andersson) Uline & W.L. Bray | Synonym |  | TRO | 
	
		| Amaranthus standleyanus Parodi ex Covas | Accepted |  | WCSP (in review) | 
	
		| Amaranthus strictus Willd. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus strictus Ten. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus sylvestris Desf. | Synonym |  | TRO | 
	
		| Amaranthus taishanensis F.Z.Li & C.K.Ni | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tamariscinus Nutt. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus tamaulipensis Henrickson | Accepted |  | WCSP (in review) | 
	
		| Amaranthus × tarraconensis Sennen & Pau [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus tenuiflorus Fisch. ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tenuifolius Willd. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus tenuifolius Wall. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tenuifolius Roxb. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tenuis Benth. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus terminatum Miq. | Unresolved |  | TRO | 
	
		| Amaranthus × texensis Henrickson | Accepted |  | WCSP (in review) | 
	
		| Amaranthus thellungianus Nevski ex Vassilcz. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus thellungianus Nevski | Accepted |  | TRO | 
	
		| Amaranthus × thevenoei Degen & Thell. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus thunbergii Moq. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus thunbergii sensu Suess. & Podl. | Synonym |  | TRO | 
	
		| Amaranthus timeroyi Jord. ex Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus torreyi (A.Gray) Benth. ex S.Watson | Synonym |  | WCSP (in review) | 
	
		| Amaranthus torreyi f. prostratus Farw. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus torreyi var. suffruticosus Uline & W.L.Bray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tortuosus Hornem. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus × tremolsii Sennen [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus tricolor L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus tricolor var. gangeticus (L.) Fiori | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tricolor var. mangostanus (L.) Aellen | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tricolor var. melancholicus (L.) Lam. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tricolor var. tristis (Willd.) Mehrotra, Aswal & Bisht | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tricolor var. tristis (L.) Thell. | Synonym |  | TRO | 
	
		| Amaranthus tristis L. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tristis Wall. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tristis Willd. | Synonym |  | TRO | 
	
		| Amaranthus tristis var. flexuosus Moq. | Synonym |  | TRO | 
	
		| Amaranthus tristis var. leptostachys Moq. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tristis var. xanthostachys Moq. | Synonym |  | TRO | 
	
		| Amaranthus trivialis Rota | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tuberculatus (Moq.) Sauer | Accepted |  | WCSP (in review) | 
	
		| Amaranthus tuberculatus var. prostratus (Uline & W.L.Bray) Mohlenbr. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tuberculatus var. rudis (J.D.Sauer) Costea & Tardif | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tuberculatus var. subnudus (S.Watson) Mohlenbr. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus tuberculatus x rudis | Unresolved |  | TRO | 
	
		| Amaranthus tucsonensis Henrickson | Accepted |  | WCSP (in review) | 
	
		| Amaranthus × turcicensis Domin [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus turcomanicus Gand. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus × turicensis Priszter [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus ulinei Kov. | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus undulatus R.Br. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus undulatus Lindl. | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus urceolatus Benth. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus urceolatus var. jonesii Uline & W.L.Bray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus urceolatus var. obcordatus Uline & W.L.Bray | Synonym |  | WCSP (in review) | 
	
		| Amaranthus velutina (Hook.f.) Spruce ex K.Schum. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus venulosus S.Watson | Accepted |  | WCSP (in review) | 
	
		| Amaranthus verticillatus Pav. ex Moq. [Invalid] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus verticillatus Sessé & Moç. [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus violaceus Moq. [Invalid] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus viridis L. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus viridis All. [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Amaranthus viscidulus Greene [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus vulgatissimus Speg. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus vulgatissimus var. sublanceolatus Thell. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus warnockii I.M.Johnst. | Synonym |  | WCSP (in review) | 
	
		| Amaranthus watsonii Standl. | Accepted |  | WCSP (in review) | 
	
		| Amaranthus × wilczekii Sennen [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Amaranthus wrightii S.Watson | Accepted |  | WCSP (in review) | 
	
		| Amaranthus zanensis Hornem. ex Moq. [Unplaced] | Unresolved |  | WCSP (in review) |