| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ACWR4 | Acoelorraphe wrightii (Griseb. & H. Wendl.) H. Wendl. ex Becc. | Everglades palm | Arecaceae
|
| ACOEL | Acoelorraphe H. Wendl. | palm | Arecaceae
|
| ACCA12 | Acomastylis calthifolia (Menzies ex Sm.) Bolle | Geum calthifolium | Rosaceae
|
| ACMA7 | Acomastylis macrantha (Kearney) Bolle | Geum macranthum | Rosaceae
|
| ACPE4 | Acomastylis peckii (Pursh) Bolle | Geum peckii | Rosaceae
|
| ACRA3 | Acomastylis radiata (Michx.) Bolle | Geum radiatum | Rosaceae
|
| ACROT | Acomastylis rossii (R. Br.) Greene ssp. turbinata (Rydb.) W.A. Weber | Geum rossii var. turbinatum | Rosaceae
|
| ACRO3 | Acomastylis rossii (R. Br.) Greene | Geum rossii var. rossii | Rosaceae
|
| ACAN8 | Aconitum anthora L. | yellow monkshood | Ranunculaceae
|
| ACBU | Aconitum bulbiferum T.J. Howell | Aconitum columbianum ssp. viviparum | Ranunculaceae
|
| ACCA20 | Aconitum carmichaelii Debeaux | Carmichael's monkshood | Ranunculaceae
|
| ACCOC3 | Aconitum columbianum Nutt. ssp. columbianum | Columbian monkshood | Ranunculaceae
|
| ACCOP | Aconitum columbianum Nutt. ssp. pallidum Piper | Aconitum columbianum ssp. columbianum | Ranunculaceae
|
| ACCOV2 | Aconitum columbianum Nutt. ssp. viviparum (Greene) D.E. Brink | Columbian monkshood | Ranunculaceae
|
| ACCOB | Aconitum columbianum Nutt. var. bakeri (Greene) Harrington | Aconitum columbianum ssp. columbianum | Ranunculaceae
|
| ACCOH | Aconitum columbianum Nutt. var. howellii (A. Nels. & J.F. Macbr.) C.L. Hitchc. | Aconitum columbianum ssp. viviparum | Ranunculaceae
|
| ACCOO | Aconitum columbianum Nutt. var. ochroleucum A. Nels. | Aconitum columbianum ssp. columbianum | Ranunculaceae
|
| ACCO4 | Aconitum columbianum Nutt. | Columbian monkshood | Ranunculaceae
|
| ACDEC | Aconitum delphiniifolium DC. ssp. chamissonianum (Reichenb.) Hult�n | larkspurleaf monkshood | Ranunculaceae
|
| ACDED3 | Aconitum delphiniifolium DC. ssp. delphiniifolium | larkspurleaf monkshood | Ranunculaceae
|
| ACDEP | Aconitum delphiniifolium DC. ssp. paradoxum (Reichenb.) Hult�n | larkspurleaf monkshood | Ranunculaceae
|
| ACDEA | Aconitum delphiniifolium DC. var. albiflorum Porsild | Aconitum delphiniifolium ssp. delphiniifolium | Ranunculaceae
|
| ACDE2 | Aconitum delphiniifolium DC. | larkspurleaf monkshood | Ranunculaceae
|
| ACFE | Aconitum ferox Wallich ex Ser. | Indian aconite | Ranunculaceae
|
| ACFI3 | Aconitum fischeri Reichb. | Fischer monkshood | Ranunculaceae
|
| ACGE3 | Aconitum geranioides Greene | Aconitum columbianum ssp. columbianum | Ranunculaceae
|
| ACHA2 | Aconitum hansenii Greene | Aconitum columbianum ssp. viviparum | Ranunculaceae
|
| ACHO | Aconitum howellii A. Nels. & J.F. Macbr. | Aconitum columbianum ssp. viviparum | Ranunculaceae
|
| ACIN2 | Aconitum infectum Greene | Arizona monkshood | Ranunculaceae
|
| ACLE6 | Aconitum leibergii Greene | Aconitum columbianum ssp. columbianum | Ranunculaceae
|
| ACMA4 | Aconitum maximum Pallas ex DC. | Kamchatka aconite | Ranunculaceae
|
| ACMO3 | Aconitum mogollonicum Greene | Aconitum columbianum ssp. columbianum | Ranunculaceae
|
| ACNA | Aconitum napellus L. | Venus' chariot | Ranunculaceae
|
| ACNI3 | Aconitum nivatum A. Nels. | Aconitum delphiniifolium ssp. paradoxum | Ranunculaceae
|
| ACNOQ | Aconitum noveboracense Gray ex Coville var. quasiciliatum Fassett | Aconitum noveboracense | Ranunculaceae
|
| ACNO2 | Aconitum noveboracense Gray ex Coville | northern blue monkshood | Ranunculaceae
|
| ACRE | Aconitum reclinatum Gray | trailing white monkshood | Ranunculaceae
|
| ACUNM | Aconitum uncinatum L. ssp. muticum (DC.) Hardin | southern blue monkshood | Ranunculaceae
|
| ACUNN | Aconitum uncinatum L. ssp. noveboracense (Gray ex Coville) Hardin | Aconitum noveboracense | Ranunculaceae
|
| ACUNU | Aconitum uncinatum L. ssp. uncinatum | southern blue monkshood | Ranunculaceae
|
| ACUNA | Aconitum uncinatum L. var. acutidens Fern. | Aconitum uncinatum ssp. uncinatum | Ranunculaceae
|
| ACUNM2 | Aconitum uncinatum L. var. muticum DC. | Aconitum uncinatum ssp. muticum | Ranunculaceae
|
| ACUN | Aconitum uncinatum L. | southern blue monkshood | Ranunculaceae
|
| ACVI5 | Aconitum viviparum Greene | Aconitum columbianum ssp. viviparum | Ranunculaceae
|
| ACVU2 | Aconitum vulparia Reichb. ex Sprengel | wolfsbane | Ranunculaceae
|
| ACONI | Aconitum L. | monkshood | Ranunculaceae
|
| ACALG | Aconogonum alaskanum (W. Wight ex Hult�n) Soj�k var. glabrescens (Hult�n) H. Hinds | Polygonum alpinum | Polygonaceae
|
| ACAL6 | Aconogonum alaskanum (W. Wight ex Hult�n) Soj�k | Polygonum alpinum | Polygonaceae
|
| ACAL9 | Aconogonum alpinum (All.) Schur | Polygonum alpinum | Polygonaceae
|
| ACDAG | Aconogonum davisiae (Brewer ex Gray) Soj�k var. glabrum (G.N. Jones) S.-P. Hong | Polygonum davisiae | Polygonaceae
|
| ACDA3 | Aconogonum davisiae (Brewer ex Gray) Soj�k | Polygonum davisiae | Polygonaceae
|
| ACHUL | Aconogonum hultenianum (Yurtsev) Tzvelev var. lapathifolium (Cham. & Schlecht.) S.-P. Hong | Polygonum alpinum | Polygonaceae
|
| ACHU2 | Aconogonum hultenianum (Yurtsev) Tzvelev | Polygonum alpinum | Polygonaceae
|
| ACNE5 | Aconogonum newberryi (Small) Soj�k | Polygonum davisiae | Polygonaceae
|
| ACPHG | Aconogonum phytolaccifolium (Meisn. ex Small) Small ex Rydb. var. glabrum S.-P. Hong | Polygonum phytolaccifolium | Polygonaceae
|
| ACPH2 | Aconogonum phytolaccifolium (Meisn. ex Small) Small ex Rydb. | Polygonum phytolaccifolium | Polygonaceae
|
| ACPO7 | Aconogonum polystachyum (Wallich ex Meisn.) Haraldson | Polygonum polystachyum | Polygonaceae
|
| ACAM | Acorus americanus (Raf.) Raf. | sweetflag | Acoraceae
|
| ACCAA2 | Acorus calamus L. var. americanus (Raf.) H.D. Wulff. | Acorus americanus | Acoraceae
|
| ACCA4 | Acorus calamus L. | calamus | Acoraceae
|
| ACCA10 | Acorus calamus auct. non L. | Acorus americanus | Acoraceae
|
| ACGR15 | Acorus gramineus Sol. ex Aiton | grassleaf sweet flag | Acoraceae
|
| ACORU | Acorus L. | sweetflag | Acoraceae
|
| ACDI3 | Acosta diffusa (Lam.) Soj�k | Centaurea diffusa | Asteraceae
|
| ACMA9 | Acosta maculosa auct. non Holub | Centaurea biebersteinii | Asteraceae
|
| ACMI3 | Acourtia microcephala DC. | sacapellote | Asteraceae
|
| ACNA2 | Acourtia nana (Gray) Reveal & King | dwarf desertpeony | Asteraceae
|
| ACRU3 | Acourtia runcinata (Lag. ex D. Don) B.L. Turner | featherleaf desertpeony | Asteraceae
|
| ACTH | Acourtia thurberi (Gray) Reveal & King | Thurber's desertpeony | Asteraceae
|
| ACWR5 | Acourtia wrightii (Gray) Reveal & King | brownfoot | Asteraceae
|
| ACOUR | Acourtia D. Don | desertpeony | Asteraceae
|
| ACRA6 | Acrachne racemosa (Roemer & J.A. Schultes) Ohwi | goosegrass | Poaceae
|
| ACRAC | Acrachne Chiov. | goosegrass | Poaceae
|
| ACCI3 | Acrobolbus ciliatus (Mitt.) Schiffn. | | Acrobolbaceae
|
| ACROB | Acrobolbus Nees | | Acrobolbaceae
|
| ACAM8 | Acroceras amplectens Stapf | acroceras | Poaceae
|
| ACMA5 | Acroceras macrum Stapf | Nile grass | Poaceae
|
| ACROC4 | Acroceras Stapf | acroceras | Poaceae
|
| ACCO14 | Acrocladium cordifolium (Hedw.) P. Rich. & Wallace | Calliergon cordifolium | Amblystegiaceae
|
| ACCU2 | Acrocladium cuspidatum (Hedw.) Lindb. | Calliergonella cuspidata | Amblystegiaceae
|
| ACME2 | Acrocomia media O.F. Cook | grugru palm | Arecaceae
|
| ACTO5 | Acrocomia totai Mart. | grugru palm | Arecaceae
|
| ACVI6 | Acrocomia vinifera Oersted | coyol palm | Arecaceae
|
| ACROC | Acrocomia Mart. | acrocomia | Arecaceae
|
| ACCA18 | Acrocordia cavata (Ach.) R. C. Harris | acrocordia lichen | Monoblastiaceae
|
| ACCO12 | Acrocordia conoidea (Fr.) Korber | acrocordia lichen | Monoblastiaceae
|
| ACGE5 | Acrocordia gemmata (Ach.) A. Massal. | acrocordia lichen | Monoblastiaceae
|
| ACME4 | Acrocordia megalospora (Fink) R. C. Harris | acrocordia lichen | Monoblastiaceae
|
| ACROC3 | Acrocordia A. Massal. | acrocordia | Monoblastiaceae
|
| ACSA5 | Acrodiclidium salicifolium (Sw.) Griseb. | Licaria parvifolia | Lauraceae
|
| ACAL10 | Acrolasia albicaulis (Dougl. ex Hook.) Rydb. | Mentzelia albicaulis | Loasaceae
|
| ACDE6 | Acrolasia desertorum A. Davids. | Mentzelia desertorum | Loasaceae
|
| ACDI2 | Acrolasia dispersa (S. Wats.) A. Davids. | Mentzelia dispersa var. dispersa | Loasaceae
|
| ACHU3 | Acrolasia humilis Osterhout | Mentzelia humilis | Loasaceae
|
| ACMO5 | Acrolasia montana A. Davids. | Mentzelia montana | Loasaceae
|
| ACTH2 | Acrolasia thompsonii (Glad.) W.A. Weber | Mentzelia humilis | Loasaceae
|
| ACHE11 | Acrolejeunea heterophylla (A. Evans) Grolle & Gradst. | | Lejeuneaceae
|
| ACROL | Acrolejeunea (Spruce) Schiffn. nom. cons. | | Lejeuneaceae
|
| ACHE9 | Acronychia heterophylla A. Gray | | Rutaceae
|
| ACRON | Acronychia J.R. & G. Forst. | | Rutaceae
|
| ACSM3 | Acroporium smallii (Williams) Crum & Anderson | Small's acroporium moss | Sematophyllaceae
|