| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ARBR4 | Arenaria brevifolia Nutt. ex Torr. & Gray | Minuartia uniflora | Caryophyllaceae
|
| ARBU4 | Arenaria burkei T.J. Howell | Arenaria congesta var. subcongesta | Caryophyllaceae
|
| ARCA29 | Arenaria californica (Gray) Brewer | Minuartia californica | Caryophyllaceae
|
| ARCAA | Arenaria capillaris Poir. ssp. americana Maguire | fescue sandwort | Caryophyllaceae
|
| ARCAC6 | Arenaria capillaris Poir. ssp. capillaris | slender mountain sandwort | Caryophyllaceae
|
| ARCAA2 | Arenaria capillaris Poir. var. americana (Maguire) R.J. Davis | Arenaria capillaris ssp. americana | Caryophyllaceae
|
| ARCAN | Arenaria capillaris Poir. var. nardifolia (Ledeb.) Regel | Arenaria capillaris ssp. capillaris | Caryophyllaceae
|
| ARCA7 | Arenaria capillaris Poir. | slender mountain sandwort | Caryophyllaceae
|
| ARCA31 | Arenaria caroliniana Walt. | Minuartia caroliniana | Caryophyllaceae
|
| ARCH8 | Arenaria chamissonis Maguire | Stellaria dicranoides | Caryophyllaceae
|
| ARCO16 | Arenaria compacta Coville | Arenaria kingii ssp. compacta | Caryophyllaceae
|
| ARCO14 | Arenaria confusa Rydb. | Arenaria lanuginosa ssp. saxosa | Caryophyllaceae
|
| ARCOA3 | Arenaria congesta Nutt. var. aculeata (S. Wats.) M.E. Jones | Arenaria aculeata | Caryophyllaceae
|
| ARCOC | Arenaria congesta Nutt. var. cephaloidea (Rydb.) Maguire | sharptip sandwort | Caryophyllaceae
|
| ARCOC2 | Arenaria congesta Nutt. var. charlestonensis Maguire | Charleston sandwort | Caryophyllaceae
|
| ARCOC4 | Arenaria congesta Nutt. var. congesta | ballhead sandwort | Caryophyllaceae
|
| ARCOC3 | Arenaria congesta Nutt. var. crassula Maguire | ballhead sandwort | Caryophyllaceae
|
| ARCOE | Arenaria congesta Nutt. var. expansa Maguire | Arenaria congesta var. lithophila | Caryophyllaceae
|
| ARCOG | Arenaria congesta Nutt. var. glandulifera Maguire | gland sandwort | Caryophyllaceae
|
| ARCOK | Arenaria congesta Nutt. var. kingii (S. Wats.) B.L. Robins. | Arenaria kingii ssp. kingii | Caryophyllaceae
|
| ARCOL | Arenaria congesta Nutt. var. lithophila (Rydb.) Maguire | loosehead sandwort | Caryophyllaceae
|
| ARCOM | Arenaria congesta Nutt. var. macradenia (S. Wats.) M.E. Jones | Arenaria macradenia ssp. macradenia var. macradenia | Caryophyllaceae
|
| ARCOP3 | Arenaria congesta Nutt. var. parishiorum (B.L. Robins.) B.L. Robins. | Arenaria macradenia ssp. macradenia var. macradenia | Caryophyllaceae
|
| ARCOP | Arenaria congesta Nutt. var. prolifera Maguire | ballhead sandwort | Caryophyllaceae
|
| ARCOS | Arenaria congesta Nutt. var. simulans Maguire | ballhead sandwort | Caryophyllaceae
|
| ARCOS2 | Arenaria congesta Nutt. var. subcongesta (S. Wats.) S. Wats. | subcongesta sandwort | Caryophyllaceae
|
| ARCOS3 | Arenaria congesta Nutt. var. suffrutescens (Gray) B.L. Robins. | suffrutescent sandwort | Caryophyllaceae
|
| ARCOW | Arenaria congesta Nutt. var. wheelerensis Maguire | Wheeler's sandwort | Caryophyllaceae
|
| ARCO5 | Arenaria congesta Nutt. | ballhead sandwort | Caryophyllaceae
|
| ARCR7 | Arenaria crilloniana W. Drew | Minuartia macrocarpa | Caryophyllaceae
|
| ARCU5 | Arenaria cumberlandensis B.E. Wofford & Kral | Minuartia cumberlandensis | Caryophyllaceae
|
| ARDA3 | Arenaria dawsonensis Britt. | Minuartia dawsonensis | Caryophyllaceae
|
| ARDI11 | Arenaria diffusa (Hornem.) Wormsk. | Honckenya peploides ssp. diffusa | Caryophyllaceae
|
| ARDOE | Arenaria douglasii Fenzl ex Torr. & Gray var. emarginata H.K. Sharsmith | Minuartia douglasii | Caryophyllaceae
|
| ARDO5 | Arenaria douglasii Fenzl ex Torr. & Gray | Minuartia douglasii | Caryophyllaceae
|
| ARDR6 | Arenaria drummondii Shinners | Minuartia drummondii | Caryophyllaceae
|
| AREAA | Arenaria eastwoodiae Rydb. var. adenophora Kearney & Peebles | Eastwood's sandwort | Caryophyllaceae
|
| AREAE | Arenaria eastwoodiae Rydb. var. eastwoodiae | Eastwood's sandwort | Caryophyllaceae
|
| AREA | Arenaria eastwoodiae Rydb. | Eastwood's sandwort | Caryophyllaceae
|
| ARELC | Arenaria elegans Cham. & Schlecht. var. columbiana Raup | Minuartia elegans | Caryophyllaceae
|
| AREL6 | Arenaria elegans Cham. & Schlecht. | Minuartia elegans | Caryophyllaceae
|
| AREM | Arenaria emarginata (H.K. Sharsmith) Hoover | Minuartia douglasii | Caryophyllaceae
|
| ARFEA | Arenaria fendleri Gray var. aculeata (S. Wats.) Welsh | Arenaria aculeata | Caryophyllaceae
|
| ARFEB | Arenaria fendleri Gray var. brevifolia (Maguire) Maguire | Fendler's sandwort | Caryophyllaceae
|
| ARFED | Arenaria fendleri Gray var. diffusa Porter | Arenaria fendleri var. fendleri | Caryophyllaceae
|
| ARFEE | Arenaria fendleri Gray var. eastwoodiae (Rydb.) Harrington | Arenaria eastwoodiae var. eastwoodiae | Caryophyllaceae
|
| ARFEF3 | Arenaria fendleri Gray var. fendleri | Fendler's sandwort | Caryophyllaceae
|
| ARFEG | Arenaria fendleri Gray var. glabrescens S. Wats. | Arenaria kingii ssp. compacta | Caryophyllaceae
|
| ARFEP | Arenaria fendleri Gray var. porteri Rydb. | Porter's sandwort | Caryophyllaceae
|
| ARFES3 | Arenaria fendleri Gray var. subcongesta S. Wats. | Arenaria congesta var. subcongesta | Caryophyllaceae
|
| ARFET3 | Arenaria fendleri Gray var. tweedyi (Rydb.) Maguire | Tweedy's sandwort | Caryophyllaceae
|
| ARFE3 | Arenaria fendleri Gray | Fendler's sandwort | Caryophyllaceae
|
| ARFI4 | Arenaria filiorum Maguire | Minuartia filiorum | Caryophyllaceae
|
| ARFO4 | Arenaria fontinalis (Short & Peter) Shinners | Stellaria fontinalis | Caryophyllaceae
|
| ARFO6 | Arenaria formosa (Fisch.) Regel | Arenaria capillaris ssp. americana | Caryophyllaceae
|
| ARFRF2 | Arenaria franklinii Dougl. ex Hook. var. franklinii | Franklin's sandwort | Caryophyllaceae
|
| ARFRT | Arenaria franklinii Dougl. ex Hook. var. thompsonii M.E. Peck | Thompson's sandwort | Caryophyllaceae
|
| ARFR | Arenaria franklinii Dougl. ex Hook. | Franklin's sandwort | Caryophyllaceae
|
| ARGL14 | Arenaria glabra Michx. | Minuartia glabra | Caryophyllaceae
|
| ARGO2 | Arenaria godfreyi Shinners | Minuartia godfreyi | Caryophyllaceae
|
| ARGR8 | Arenaria gregaria Heller | Minuartia nuttallii ssp. gregaria | Caryophyllaceae
|
| ARGRG | Arenaria groenlandica (Retz.) Spreng. var. glabra (Michx.) Fern. | Minuartia glabra | Caryophyllaceae
|
| ARGR9 | Arenaria groenlandica (Retz.) Spreng. | Minuartia groenlandica | Caryophyllaceae
|
| ARHOD | Arenaria hookeri Nutt. ssp. desertorum (Maguire) W.A. Weber | Hooker's desert sandwort | Caryophyllaceae
|
| ARHOH3 | Arenaria hookeri Nutt. ssp. hookeri | Hooker's sandwort | Caryophyllaceae
|
| ARHOP | Arenaria hookeri Nutt. ssp. pinetorum (A. Nels.) W.A. Weber | Hooker's sandwort | Caryophyllaceae
|
| ARHOD2 | Arenaria hookeri Nutt. var. desertorum Maguire | Arenaria hookeri ssp. desertorum | Caryophyllaceae
|
| ARHOP4 | Arenaria hookeri Nutt. var. pinetorum (A. Nels.) Maguire | Arenaria hookeri ssp. pinetorum | Caryophyllaceae
|
| ARHO4 | Arenaria hookeri Nutt. | Hooker's sandwort | Caryophyllaceae
|
| ARHO9 | Arenaria howellii S. Wats. | Minuartia howellii | Caryophyllaceae
|
| ARJA2 | Arenaria jamesiana (Torr.) Shinners | Pseudostellaria jamesiana | Caryophyllaceae
|
| ARKIC | Arenaria kingii (S. Wats.) M.E. Jones ssp. compacta (Coville) Maguire | King's compact sandwort | Caryophyllaceae
|
| ARKIK | Arenaria kingii (S. Wats.) M.E. Jones ssp. kingii | King's sandwort | Caryophyllaceae
|
| ARKIP | Arenaria kingii (S. Wats.) M.E. Jones ssp. plateauensis Maguire | King's plateau sandwort | Caryophyllaceae
|
| ARKIR | Arenaria kingii (S. Wats.) M.E. Jones ssp. rosea Maguire | King's rosy sandwort | Caryophyllaceae
|
| ARKIU2 | Arenaria kingii (S. Wats.) M.E. Jones ssp. uintahensis (A. Nels.) Maguire | Uinta sandwort | Caryophyllaceae
|
| ARKIG | Arenaria kingii (S. Wats.) M.E. Jones var. glabrescens (S. Wats.) Maguire | Arenaria kingii ssp. compacta | Caryophyllaceae
|
| ARKIP2 | Arenaria kingii (S. Wats.) M.E. Jones var. plateauensis (Maguire) Reveal | Arenaria kingii ssp. plateauensis | Caryophyllaceae
|
| ARKIU3 | Arenaria kingii (S. Wats.) M.E. Jones var. uintahensis (A. Nels.) C.L. Hitchc. | Arenaria kingii ssp. uintahensis | Caryophyllaceae
|
| ARKI | Arenaria kingii (S. Wats.) M.E. Jones | King's sandwort | Caryophyllaceae
|
| ARLAL3 | Arenaria lanuginosa (Michx.) Rohrb. ssp. lanuginosa var. lanuginosa | spreading sandwort | Caryophyllaceae
|
| ARLAL4 | Arenaria lanuginosa (Michx.) Rohrb. ssp. lanuginosa var. longipedunculata Duncan | spreading sandwort | Caryophyllaceae
|
| ARLAL2 | Arenaria lanuginosa (Michx.) Rohrb. ssp. lanuginosa | spreading sandwort | Caryophyllaceae
|
| ARLAS | Arenaria lanuginosa (Michx.) Rohrb. ssp. saxosa (Gray) Maguire | spreading sandwort | Caryophyllaceae
|
| ARLAC | Arenaria lanuginosa (Michx.) Rohrb. var. cinerascens (B.L. Robins.) Shinners | Arenaria lanuginosa ssp. saxosa | Caryophyllaceae
|
| ARLA4 | Arenaria lanuginosa (Michx.) Rohrb. | spreading sandwort | Caryophyllaceae
|
| ARLAH | Arenaria laricifolia (L.) B.L. Robins. var. hultenii Welsh p.p. | Minuartia yukonensis | Caryophyllaceae
|
| ARLAM4 | Arenaria laricifolia (L.) B.L. Robins. var. marcescens (Fern.) Boivin | Minuartia marcescens | Caryophyllaceae
|
| ARLAO | Arenaria laricifolia (L.) B.L. Robins. var. occulta (Ser.) Boivin p.p. | Minuartia yukonensis | Caryophyllaceae
|
| ARLA13 | Arenaria laricifolia (L.) B.L. Robins. p.p. | Minuartia yukonensis | Caryophyllaceae
|
| ARLAA4 | Arenaria lateriflora L. var. angustifolia (Regel) St. John | Moehringia lateriflora | Caryophyllaceae
|
| ARLAT | Arenaria lateriflora L. var. tayloriae St. John | Moehringia lateriflora | Caryophyllaceae
|
| ARLA15 | Arenaria lateriflora L. | Moehringia lateriflora | Caryophyllaceae
|
| ARLE3 | Arenaria leptoclados (Reichenb.) Guss. | Arenaria serpyllifolia | Caryophyllaceae
|
| ARLI7 | Arenaria lithophila Rydb. | Arenaria congesta var. lithophila | Caryophyllaceae
|
| ARLI8 | Arenaria litorea Fern. | Minuartia dawsonensis | Caryophyllaceae
|
| ARLI3 | Arenaria livermorensis Correll | Livermore sandwort | Caryophyllaceae
|
| ARLO | Arenaria longipedunculata Hult�n | longstem sandwort | Caryophyllaceae
|
| ARLU2 | Arenaria ludens Shinners | Trans-Pecos sandwort | Caryophyllaceae
|
| ARMA13 | Arenaria macra A. Nels. & J.F. Macbr. | Minuartia michauxii var. michauxii | Caryophyllaceae
|
| ARMAF | Arenaria macradenia S. Wats. ssp. ferrisiae Abrams | Ferris' sandwort | Caryophyllaceae
|