| ID | Symbol | Scientific | Common | Family |
| 1003 | ACHYR2 | Achyranthes L. | chaff flower | Amaranthaceae |
| 1004 | ACAS | Achyranthes aspera L. | devil's horsewhip | Amaranthaceae |
| 1005 | ACASA | Achyranthes aspera L. var. aspera | devil's horsewhip | Amaranthaceae |
| 1006 | ACIN4 | Achyranthes indica (L.) P. Mill. | Achyranthes aspera var. aspera | Amaranthaceae |
| 1007 | CEAS3 | Centrostachys aspera (L.) Standl. | Achyranthes aspera var. aspera | Amaranthaceae |
| 1008 | CEIN6 | Centrostachys indica (L.) Standl. | Achyranthes aspera var. aspera | Amaranthaceae |
| 1009 | ACASP | Achyranthes aspera L. var. pubescens (Moq.) Townsend | devil's horsewhip | Amaranthaceae |
| 1010 | ACAT | Achyranthes atollensis St. John | Hawai'i chaff flower | Amaranthaceae |
| 1011 | ACBI9 | Achyranthes bidentata Blume [excluded] | | Amaranthaceae |
| 1012 | ACCA37 | Achyranthes canescens R. Br. | | Amaranthaceae |
| 1013 | ACJA | Achyranthes japonica (Miq.) Nakai | Japanese chaff flower | Amaranthaceae |
| 1014 | ACJAH | Achyranthes japonica (Miq.) Nakai var. hachijoensis Honda | Japanese chaff flower | Amaranthaceae |
| 1015 | ACMU2 | Achyranthes mutica Gray | blunt chaff flower | Amaranthaceae |
| 1016 | ACNE3 | Achyranthes nelsonii St. John | Achyranthes mutica | Amaranthaceae |
| 1017 | ACSP3 | Achyranthes splendens Mart. ex Moq. | Maui chaff flower | Amaranthaceae |
| 1018 | ACSPR2 | Achyranthes splendens Mart. ex Moq. var. rotundata Hbd. | Maui chaff flower | Amaranthaceae |
| 1019 | ACSPR | Achyranthes splendens Mart. ex Moq. var. reflecta Hbd. | Achyranthes splendens var. rotundata | Amaranthaceae |
| 1020 | ACSPS | Achyranthes splendens Mart. ex Moq. var. splendens | Maui chaff flower | Amaranthaceae |
| 1400 | AERVA | Aerva Forssk. | aerva | Amaranthaceae |
| 1401 | AEJA | Aerva javanica (Burman f.) A. L. Juss. ex Schultes | Java aerva | Amaranthaceae |
| 1402 | AETO2 | Aerva tomentosa Forsskal | Aerva javanica | Amaranthaceae |
| 1403 | AELA | Aerva lanata (L.) A. L. Juss. ex Schultes | aerva | Amaranthaceae |
| 1404 | AESE | Aerva sericea Moq. | island puzzle | Amaranthaceae |
| 2891 | ALTER2 | Alternanthera Forssk. | joyweed | Amaranthaceae |
| 2892 | ALBE | Alternanthera bettzichiana (Regel) Voss | calicoplant | Amaranthaceae |
| 2893 | ACBE3 | Achyranthes bettzichiana (Regel) Standl. | Alternanthera bettzichiana | Amaranthaceae |
| 2894 | ACFIB | Achyranthes ficoidea (L.) Lam. ssp. bettzichiana (Regel) Baker | Alternanthera bettzichiana | Amaranthaceae |
| 2895 | ALAM11 | Alternanthera amoena (Lemaire) Voss | Alternanthera bettzichiana | Amaranthaceae |
| 2896 | ALTEV | Alternanthera tenella Colla var. versicolor (Lem.) Veldkamp | Alternanthera bettzichiana | Amaranthaceae |
| 2897 | ALBR5 | Alternanthera brasiliana (L.) Kuntze | Brazilian joyweed | Amaranthaceae |
| 2898 | ACBR2 | Achyranthes brasiliana (L.) Standl. | Alternanthera brasiliana | Amaranthaceae |
| 2899 | ALDE2 | Alternanthera dentata (Moench) Stuchlik ex R.E. Fries | Alternanthera brasiliana | Amaranthaceae |
| 2900 | ALJA | Alternanthera jacquinii (Schrad.) Griseb. ex Kuntze | Alternanthera brasiliana | Amaranthaceae |
| 2901 | GOBR3 | Gomphrena brasiliana L. | Alternanthera brasiliana | Amaranthaceae |
| 2902 | ALCA5 | Alternanthera caracasana Kunth | washerwoman | Amaranthaceae |
| 2903 | ACPE3 | Achyranthes peploides (Humb. & Bonpl. ex J.A. Schultes) Britt. & P. Wilson | Alternanthera caracasana | Amaranthaceae |
| 2904 | ALPE6 | Alternanthera peploides (Humb. & Bonpl. ex J.A. Schultes) Urban | Alternanthera caracasana | Amaranthaceae |
| 2905 | ALCR8 | Alternanthera crucis (Moq.) Boldingh | West Indian joyweed | Amaranthaceae |
| 2906 | ACPO5 | Achyranthes portoricensis (Kuntze) Standl. | Alternanthera crucis | Amaranthaceae |
| 2907 | ALDO2 | Alternanthera dolichocephala (Urban) Urban | Alternanthera crucis | Amaranthaceae |
| 2908 | ALPO5 | Alternanthera portoricensis Kuntze | Alternanthera crucis | Amaranthaceae |
| 2909 | ALEC2 | Alternanthera echinocephala (Hook. f.) Christoph. [excluded] | | Amaranthaceae |
| 2910 | ALME7 | Alternanthera menziesii St. John [excluded] | Alternanthera echinocephala | Amaranthaceae |
| 2911 | ALFI8 | Alternanthera ficoidea (L.) Beauv. | sanguinaria | Amaranthaceae |
| 2912 | ACFI2 | Achyranthes ficoidea auct. non (L.) Lam. [misapplied] | Alternanthera ficoidea | Amaranthaceae |
| 2913 | ALTE4 | Alternanthera tenella Colla | Alternanthera ficoidea | Amaranthaceae |
| 2914 | ALFL | Alternanthera flavescens Kunth | yellow joyweed | Amaranthaceae |
| 2915 | ACRA2 | Achyranthes ramosissima auct. non (Mart.) Standl. [misapplied] | Alternanthera flavescens | Amaranthaceae |
| 2916 | ALFL4 | Alternanthera floridana (Chapman) Small | Alternanthera flavescens | Amaranthaceae |
| 2917 | ALRA3 | Alternanthera ramosissima auct. non (Mart.) Chod. [misapplied] | Alternanthera flavescens | Amaranthaceae |
| 2918 | ALFL5 | Alternanthera flavogrisea Urban | hairy joyweed | Amaranthaceae |
| 2919 | ALTEF | Alternanthera tenella Colla ssp. flavogrisea (Urban) Mears & Veldkamp | Alternanthera flavogrisea | Amaranthaceae |
| 2920 | ALHA3 | Alternanthera hassleriana Chodat ex Chodat & Hassler | Hassler's alternanthera | Amaranthaceae |
| 2921 | ALHA4 | Alternanthera hasslerana Chodat ex Chodat & Hassler [orthographic variant] | Alternanthera hassleriana | Amaranthaceae |
| 2922 | ALMA10 | Alternanthera maritima (Mart.) St.-Hil. | seaside joyweed | Amaranthaceae |
| 2923 | ACMA6 | Achyranthes maritima (Mart.) Standl. | Alternanthera maritima | Amaranthaceae |
| 2924 | ALPA17 | Alternanthera paronichyoides St.-Hil. | smooth joyweed | Amaranthaceae |
| 2925 | ALPAA2 | Alternanthera paronichyoides St.-Hil. var. amazonica Huber | smooth joyweed | Amaranthaceae |
| 2926 | ALPAP | Alternanthera paronichyoides St.-Hil. var. paronichyoides | smooth joyweed | Amaranthaceae |
| 2927 | ACPA4 | Achyranthes paronichyoides auct. non (L.) Lam. [misapplied] | Alternanthera paronichyoides var. paronichyoides | Amaranthaceae |
| 2928 | ALPO6 | Alternanthera polygonoides auct. non (L.) R. Br. ex Sweet [misapplied] | Alternanthera paronichyoides var. paronichyoides | Amaranthaceae |
| 2929 | ALPH | Alternanthera philoxeroides (Mart.) Griseb. | alligatorweed | Amaranthaceae |
| 2930 | ACPH | Achyranthes philoxeroides (Mart.) Standl. | Alternanthera philoxeroides | Amaranthaceae |
| 2931 | ALPU3 | Alternanthera pungens Kunth | khakiweed | Amaranthaceae |
| 2932 | ACLE5 | Achyranthes leiantha (Seub.) Standl. | Alternanthera pungens | Amaranthaceae |
| 2933 | ACRE5 | Achyranthes repens L. | Alternanthera pungens | Amaranthaceae |
| 2934 | ALAC6 | Alternanthera achyrantha (L.) R. Br. ex Sweet | Alternanthera pungens | Amaranthaceae |
| 2935 | ALRE2 | Alternanthera repens (L.) Link, non J.F. Gmel. | Alternanthera pungens | Amaranthaceae |
| 2936 | ALSE4 | Alternanthera sessilis (L.) R. Br. ex DC. | sessile joyweed | Amaranthaceae |
| 2937 | ACSE4 | Achyranthes sessilis (L.) Desf. ex Steud. | Alternanthera sessilis | Amaranthaceae |
| 2938 | ALGL11 | Alternanthera glabra Moq. | Alternanthera sessilis | Amaranthaceae |
| 2939 | GOSE2 | Gomphrena sessilis L. | Alternanthera sessilis | Amaranthaceae |
| 2940 | ALTR15 | Alternanthera trigyna L. [excluded] | | Amaranthaceae |
| 3017 | AMARA | Amaranthus L. | pigweed | Amaranthaceae |
| 3018 | AMAC | Amaranthus acanthochiton Sauer | greenstripe | Amaranthaceae |
| 3019 | ACWR6 | Acanthochiton wrightii Torr. | Amaranthus acanthochiton | Amaranthaceae |
| 3020 | AMAC6 | Amaranthus acutilobus Uline & Bray [excluded] | | Amaranthaceae |
| 3021 | EUEM2 | Euxolus emarginatus A. Braun & Bouch? [excluded] | Amaranthus acutilobus | Amaranthaceae |
| 3022 | AMAL | Amaranthus albus L. | prostrate pigweed | Amaranthaceae |
| 3023 | AMALP3 | Amaranthus albus L. var. pubescens (Uline & Bray) Fern. | Amaranthus albus | Amaranthaceae |
| 3024 | AMGR | Amaranthus graecizans auct. non L. p.p. [misapplied] | Amaranthus albus | Amaranthaceae |
| 3025 | AMGRP | Amaranthus graecizans L. var. pubescens Uline & Bray | Amaranthus albus | Amaranthaceae |
| 3026 | AMPU | Amaranthus pubescens (Uline & Bray) Rydb. | Amaranthus albus | Amaranthaceae |
| 3027 | AMAR | Amaranthus arenicola I.M. Johnston | sandhill amaranth | Amaranthaceae |
| 3028 | AMTO | Amaranthus torreyi auct. non (Gray) Benth. ex S. Wats. [misapplied] | Amaranthus arenicola | Amaranthaceae |
| 3029 | AMAU | Amaranthus australis (Gray) Sauer | southern amaranth | Amaranthaceae |
| 3030 | ACAL3 | Acnida alabamensis Standl. | Amaranthus australis | Amaranthaceae |
| 3031 | ACAU4 | Acnida australis Gray | Amaranthus australis | Amaranthaceae |
| 3032 | ACCU3 | Acnida cuspidata Bertero ex Spreng. | Amaranthus australis | Amaranthaceae |
| 3033 | AMBI | Amaranthus bigelovii Uline & Bray | Bigelow's amaranth | Amaranthaceae |
| 3034 | AMTO | Amaranthus torreyi auct. non (Gray) Benth. ex S. Wats. [misapplied] | Amaranthus bigelovii | Amaranthaceae |
| 3035 | AMBL | Amaranthus blitoides S. Wats. | mat amaranth | Amaranthaceae |
| 3036 | AMGR | Amaranthus graecizans auct. non L. p.p. [misapplied] | Amaranthus blitoides | Amaranthaceae |
| 3037 | AMBL2 | Amaranthus blitum L. | purple amaranth | Amaranthaceae |
| 3038 | AMBLB | Amaranthus blitum L. var. blitum | purple amaranth | Amaranthaceae |
| 3039 | AMAS | Amaranthus ascendens Loisel. | Amaranthus blitum var. blitum | Amaranthaceae |
| 3040 | AMVI6 | Amaranthus viridis auct. non L. [misapplied] | Amaranthus blitum var. blitum | Amaranthaceae |
| 3041 | AMBLE2 | Amaranthus blitum L. var. emarginatus (Moq. ex Uline & Bray) comb. nov. ined. | | Amaranthaceae |
| 3042 | AMBLE | Amaranthus blitum L. ssp. emarginatus (Moq. ex Uline & Bray) Carretero, Garmendia & Pedrol | Amaranthus blitum var. emarginatus | Amaranthaceae |
| 3043 | AMLI | Amaranthus lividus auct. non L. [misapplied] | Amaranthus blitum var. emarginatus | Amaranthaceae |
