| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ARMI5 | Arabis missouriensis Greene | green rockcress | Brassicaceae
|
| ARMO | Arabis modesta Rollins | Rouge Canyon rockcress | Brassicaceae
|
| ARMU6 | Arabis murrayi G. Mulligan | Murray's rockcress | Brassicaceae
|
| ARNE7 | Arabis nevadensis Tidestrom | Arabis pendulina var. pendulina | Brassicaceae
|
| ARNU | Arabis nuttallii B.L. Robins. | Nuttall's rockcress | Brassicaceae
|
| AROL3 | Arabis oligantha Greene | Arabis platysperma var. platysperma | Brassicaceae
|
| AROL2 | Arabis olympica Piper | Arabis furcata var. olympica | Brassicaceae
|
| AROP | Arabis ophira Rollins | Ophir Pass rockcress | Brassicaceae
|
| AROR | Arabis oregana Rollins | Oregon rockcress | Brassicaceae
|
| AROV2 | Arabis ovata sensu Small, non Michx. | Arabis hirsuta var. pycnocarpa | Brassicaceae
|
| AROX | Arabis oxylobula Greene | Glenwood Springs rockcress | Brassicaceae
|
| AROX2 | Arabis oxyphylla Greene | Arabis drummondii | Brassicaceae
|
| ARPA35 | Arabis pallidifolia Rollins | Gunnison County rockcress | Brassicaceae
|
| ARPA | Arabis parishii S. Wats. | dwarf rockcress | Brassicaceae
|
| ARPA2 | Arabis patens Sullivant | spreading rockcress | Brassicaceae
|
| ARPEP | Arabis pendulina Greene var. pendulina | rabbitear rockcress | Brassicaceae
|
| ARPER | Arabis pendulina Greene var. russeola (Rollins) Rollins | russeola rockcress | Brassicaceae
|
| ARPE | Arabis pendulina Greene | rabbitear rockcress | Brassicaceae
|
| ARPES2 | Arabis pendulocarpa A. Nels. var. saximontana (Rollins) Dorn | Arabis williamsii var. saximontana | Brassicaceae
|
| ARPE10 | Arabis pendulocarpa A. Nels. | Arabis holboellii var. pendulocarpa | Brassicaceae
|
| ARPE12 | Arabis peramoena Greene | Arabis sparsiflora var. sparsiflora | Brassicaceae
|
| ARPE11 | Arabis perelegans A. Nels. | Arabis sparsiflora var. subvillosa | Brassicaceae
|
| ARPE2 | Arabis perennans S. Wats. | perennial rockcress | Brassicaceae
|
| ARPEA | Arabis perstellata E.L. Braun var. ampla Rollins | Arabis perstellata | Brassicaceae
|
| ARPEP2 | Arabis perstellata E.L. Braun var. phalacrocarpa (M. Hopkins) Fern. | Arabis shortii | Brassicaceae
|
| ARPES | Arabis perstellata E.L. Braun var. shortii Fern. | Arabis shortii | Brassicaceae
|
| ARPE3 | Arabis perstellata E.L. Braun | Nevada rockcress | Brassicaceae
|
| ARPE4 | Arabis petiolaris (Gray) Gray | Brazos rockcress | Brassicaceae
|
| ARPI3 | Arabis pinetorum Tidestrom | Arabis holboellii var. pinetorum | Brassicaceae
|
| ARPI2 | Arabis pinzliae Rollins | Boundary Peak rockcress | Brassicaceae
|
| ARPL5 | Arabis platyloba Greene | Arabis platysperma var. howellii | Brassicaceae
|
| ARPLH2 | Arabis platysperma Gray var. howellii (S. Wats.) Jepson | Howell's pioneer rockcress | Brassicaceae
|
| ARPLI | Arabis platysperma Gray var. imparata Jepson | Arabis platysperma var. howellii | Brassicaceae
|
| ARPLP2 | Arabis platysperma Gray var. platysperma | pioneer rockcress | Brassicaceae
|
| ARPL | Arabis platysperma Gray | pioneer rockcress | Brassicaceae
|
| ARPO9 | Arabis polyantha Greene | Arabis holboellii var. retrofracta | Brassicaceae
|
| ARPO8 | Arabis polytricha Greene | Arabis sparsiflora var. subvillosa | Brassicaceae
|
| ARPO7 | Arabis porphyrea Woot. & Standl. | Arabis fendleri var. fendleri | Brassicaceae
|
| ARPR3 | Arabis ?procurrens Waldst. & Kit. | running rockcress | Brassicaceae
|
| ARPU | Arabis puberula Nutt. | silver rockcress | Brassicaceae
|
| ARPUD | Arabis pulchra M.E. Jones ex S. Wats. var. duchesnensis Rollins | Duchesne rockcress | Brassicaceae
|
| ARPUG3 | Arabis pulchra M.E. Jones ex S. Wats. var. glabrescens Wiggins | Arabis pulchra var. gracilis | Brassicaceae
|
| ARPUG | Arabis pulchra M.E. Jones ex S. Wats. var. gracilis M.E. Jones | beautiful rockcress | Brassicaceae
|
| ARPUM | Arabis pulchra M.E. Jones ex S. Wats. var. munciensis M.E. Jones | Munci's rockcress | Brassicaceae
|
| ARPUP | Arabis pulchra M.E. Jones ex S. Wats. var. pallens M.E. Jones | beautiful rockcress | Brassicaceae
|
| ARPUP2 | Arabis pulchra M.E. Jones ex S. Wats. var. pulchra | beautiful rockcress | Brassicaceae
|
| ARPUV2 | Arabis pulchra M.E. Jones ex S. Wats. var. viridis Jepson | Arabis pulchra var. gracilis | Brassicaceae
|
| ARPU2 | Arabis pulchra M.E. Jones ex S. Wats. | beautiful rockcress | Brassicaceae
|
| ARPU14 | Arabis purpurascens T.J. Howell ex Greene | Arabis oregana | Brassicaceae
|
| ARPU18 | Arabis pusilla Rollins | Fremont County rockcress | Brassicaceae
|
| ARPYA | Arabis pycnocarpa M. Hopkins var. adpressipilis M. Hopkins | Arabis hirsuta var. pycnocarpa | Brassicaceae
|
| ARPY4 | Arabis pycnocarpa M. Hopkins | Arabis hirsuta var. pycnocarpa | Brassicaceae
|
| ARPY | Arabis pygmaea Rollins | Tulare County rockcress | Brassicaceae
|
| ARRE12 | Arabis recondita Greene | Arabis perennans | Brassicaceae
|
| ARRER2 | Arabis rectissima Greene var. rectissima | bristlyleaf rockcress | Brassicaceae
|
| ARRES | Arabis rectissima Greene var. simulans Rollins | bristlyleaf rockcress | Brassicaceae
|
| ARRE | Arabis rectissima Greene | bristlyleaf rockcress | Brassicaceae
|
| ARREG | Arabis repanda S. Wats. var. greenei Jepson | Greene's rockcress | Brassicaceae
|
| ARRER | Arabis repanda S. Wats. var. repanda | Yosemite rockcress | Brassicaceae
|
| ARRE2 | Arabis repanda S. Wats. | Yosemite rockcress | Brassicaceae
|
| ARREC | Arabis retrofracta Graham var. collinsii (Fern.) Boivin | Arabis holboellii var. collinsii | Brassicaceae
|
| ARREM | Arabis retrofracta Graham var. multicaulis Boivin | Arabis holboellii var. retrofracta | Brassicaceae
|
| ARRE11 | Arabis retrofracta Graham | Arabis holboellii var. retrofracta | Brassicaceae
|
| ARRH2 | Arabis rhodanthus Greene | Arabis holboellii var. retrofracta | Brassicaceae
|
| ARRH3 | Arabis rhomboidea Pers. | Cardamine bulbosa | Brassicaceae
|
| ARRID | Arabis rigidissima Rollins var. demota Rollins | Trinity Mountain rockcress | Brassicaceae
|
| ARRIR | Arabis rigidissima Rollins var. rigidissima | Trinity Mountain rockcress | Brassicaceae
|
| ARRI | Arabis rigidissima Rollins | Trinity Mountain rockcress | Brassicaceae
|
| ARRO11 | Arabis rollei Rollins | Klamath River rockcress | Brassicaceae
|
| ARSC2 | Arabis schistacea Rollins | divided rockcress | Brassicaceae
|
| ARSE13 | Arabis secunda T.J. Howell | Arabis holboellii var. retrofracta | Brassicaceae
|
| ARSE | Arabis selbyi Rydb. | Selby's rockcress | Brassicaceae
|
| ARSE9 | Arabis serotina Steele | shalebarren rockcress | Brassicaceae
|
| ARSE6 | Arabis serpentinicola Rollins | Arabis macdonaldiana | Brassicaceae
|
| ARSE14 | Arabis setigera Greene | Arabis rectissima var. rectissima | Brassicaceae
|
| ARSE15 | Arabis setulosa Greene | Arabis pendulina var. russeola | Brassicaceae
|
| ARSH | Arabis shockleyi Munz | Shockley's rockcress | Brassicaceae
|
| ARSHP | Arabis shortii (Fern.) Gleason var. phalacrocarpa (M. Hopkins) Steyermark | Arabis shortii | Brassicaceae
|
| ARSH2 | Arabis shortii (Fern.) Gleason | Short's rockcress | Brassicaceae
|
| ARSPA | Arabis sparsiflora Nutt. var. arcuata (Nutt.) Rollins | elegant rockcress | Brassicaceae
|
| ARSPA2 | Arabis sparsiflora Nutt. var. atrorubens (Suksdorf ex Greene) Rollins | elegant rockcress | Brassicaceae
|
| ARSPC | Arabis sparsiflora Nutt. var. californica Rollins | California rockcress | Brassicaceae
|
| ARSPC2 | Arabis sparsiflora Nutt. var. columbiana (Macoun) Rollins | Columbian rockcress | Brassicaceae
|
| ARSPP | Arabis sparsiflora Nutt. var. peramoena (Greene) Rollins | Arabis sparsiflora var. sparsiflora | Brassicaceae
|
| ARSPS2 | Arabis sparsiflora Nutt. var. sparsiflora | sicklepod rockcress | Brassicaceae
|
| ARSPS | Arabis sparsiflora Nutt. var. subvillosa (S. Wats.) Rollins | hairystem rockcress | Brassicaceae
|
| ARSP | Arabis sparsiflora Nutt. | sicklepod rockcress | Brassicaceae
|
| ARSU | Arabis subpinnatifida S. Wats. | Klamath rockcress | Brassicaceae
|
| ARSU7 | Arabis subserrata Greene | Arabis sparsiflora var. subvillosa | Brassicaceae
|
| ARSUH | Arabis suffrutescens S. Wats. var. horizontalis (Greene) Rollins | horizontal woody rockcress | Brassicaceae
|
| ARSUP | Arabis suffrutescens S. Wats. var. perstylosa Rollins | Arabis constancei | Brassicaceae
|
| ARSUS | Arabis suffrutescens S. Wats. var. suffrutescens | woody rockcress | Brassicaceae
|
| ARSU2 | Arabis suffrutescens S. Wats. | woody rockcress | Brassicaceae
|
| ARTE9 | Arabis tenuicula Greene | Arabis microphylla var. microphylla | Brassicaceae
|
| ARTE7 | Arabis tenuis Greene | Arabis holboellii var. retrofracta | Brassicaceae
|
| ARTH2 | Arabis thaliana L. | Arabidopsis thaliana | Brassicaceae
|
| ARTI2 | Arabis tiehmii Rollins | Carson Range rockcress | Brassicaceae
|
| ARTR10 | Arabis trichopoda Greene | Arabis pulchra var. gracilis | Brassicaceae
|
| ARTR6 | Arabis tricornuta Rollins | Rincon Mountain rockcress | Brassicaceae
|
| ARVI10 | Arabis virginica (L.) Poir. | Sibara virginica | Brassicaceae
|
| ARVID2 | Arabis viridis Harger var. deamii M. Hopkins | Arabis missouriensis | Brassicaceae
|