Waldo Rockcress: Arabis aculeolata (Synonym: Arabis aculeolata var. aculeolata) -
Eschscholtz's Hairy Rockcress: Arabis eschscholtziana (Synonyms: Arabis hirsuta var. eschscholtziana, Arabis hirsuta var. glabrata, Arabis hirsuta) -
Cascade Rockcress, Columbia Gorge Rockcress, Fork-haired Rockcress: Arabis furcata (Synonyms: Arabis furcata var. furcata, Arabis suksdorfii) -
Lyre-leaved Rockcress, Kamchatka Rockcress, Western Rockcress: Arabis lyrata var. occidentalis (Synonym: Arabis lyrata)
Rogue Canyon Rockcress, Modest Rockcress: Arabis modesta (Synonym: Arabis oregana var. modesta) - ?
Oregon Rockcress: Arabis oregana (Synonyms: Arabis oregana var. oregana Arabis purpurascens) -
Sharp-podded Rockcress: Boechera acutina (Synonym: Arabis acutina, Arabis divaricarpa, Arabis divaricarpa var. divaricarpa, Arabis divaricarpa var. interposita, Arabis xdivaricrpa, Arabis xdivaricarpa var. interposita)
Black-flowered Rockcress, Elegant Rockcress, Purple Sicklepod Rockcress, Sicklepod Rockcress: Boechera atrorubens (Synonyms: Arabis atrorubens, Arabis sparsiflora var. atrorubens, Arabis sparsiflora) -
Brewer's Rockcress: Boechera breweri ssp. breweri (Synonym: Arabis breweri var. breweri) -
Brewer's Roclcress, Shasta Rockcress: Boechera breweri ssp. shastaensis (Synonym: Arabis breweri var. austiniae) -
Coville's Rockcress: Boechera covillei (Synonyms: Arabis covillei, Arabis platysperma, Arabis platysperma var. howellii)
Cusick's Rockcress: Boechera cusickii (Synonym: Arabis cusickii) -
Spreading Pod Rockcress, Spreading Rockcress: Boechera divaricarpa (Synonyms:Arabis divaricarpa, Arabis xdivaricarpa, Arabis xdivaricarpa var. divaricarpa, Arabis drummondii var. interposita, Arabis drummondii x holboellii) -
Soldier Rockcress: Boechera drepanoloba (Synonym: Arabis lemmonii var. drepanoloba)
Hell's Canyon Rockcress: Boechera hastatula (Synonym: Arabis hastatula) -
Crater Lake Rockcress, Woody Rockcress: Boechera horizontalis (Synonyms: Arabis horizontalis, Arabis suffrutescens, Arabis suffrutescens var. horizontalis) -
Howell's Flatseed Rockcress: Boechera howellii (Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii)
Lemmon's Rockcress: Boechera lemmonii (Synonyms: Arabis lemmonii, Arabis lemmonii var. lemonii -
Lyall's Rockcress, Lyall's Slender Rockcress: Boechera lyallii (Synonyms: Arabis lyallii, Arabis lyallii var. lyallii, Arabis lyallii var. nubigena, Arabis murrayi) -
Small-leaved Rockcress, Littleleaf Rockcress: Boechera microphylla (Synonyms: Arabis microphylla, Arabis microphylla var. macounii, Arabis microphylla var. microphylla, Boechera microphylla var. microphylla) -
Mount Adams Rockcress: Boechera paddoensis (Synonym: Arabis lemmonii var. paddoensis) -
Columbia Rockcress, Few-flowered Rockcress, Sicklepod Rockcress, Small-flowered Rockcress: Boechera pauciflora (Synonyms: Arabis campyloba, Arabis holboellii, Arabis holboellii var. pinetorum, Arabis perelegans, Arabis sparsiflora, Arabis sparsiflora var. columbiana, Arabis sparsiflora var. subvillosa, Boechera sparsiflora var. subvillosa) -
Dropseed Rockcress, Holboell's Rockcress: Boechera pendulocarpa (Synonyms: Arabis exilis, Arabis holboellii var. pendulocarpa) -
Holboell's Rockcress: Boechera pinetorum (Synonyms: Arabis holboellii, Arabis holeboellii var. pinetorum, Boechera holboellii) -
Broad-seeded Rockcress, Pioneer Rockcress: Boechera platysperma (Synonyms: Arabis platysperma, Arabis platysperma var. platysperma)
Many-flowered Rockcress: Boechera polyantha (Synonyms: Arabis holboellii, Arabis holboellii var. retrofracta, Boechera holboellii)
Meadow Rockcress: Boechera pratincola (Synonym: Arabis xdivaricarpa)
Blue Mountain Rockcress, Hoary Rockcress: Boechera puberula (Synonym: Arabis puberula) -
Bristly-leaved Rockcress: Boechera rectissima (Synonym: Arabis rectissima, Arabis rectissima var. rectissima -
Secund Rockcress: Boechera retrofracta (Synonyms: Arabis holboellii, Arabis holboellii var. retrofracta, Arabis holboellii var. secunda, Arabis retrofracta, Arabis secunda, Boechera holboellii, Boechera holboellii var. secunda) -
Elegant Rockcress, Sicklepod Rockcress, Slender Rockcress: Boechera sparsiflora (Synonyms: Arabis arcoidea, Arabis campyloloba, Arabis peramoena, Arabis polytricha, Arabis sparsiflora, Arabis sparsiflora var. peramoena, Arabis sparsiflora var. sparsiflora, Boechera sparsiflora var. sparsiflora) -
Canadian Rockcress, Drummond's Rockcress: Boechera stricta (Synonyms: Arabis albertina, Arabis brachycarpa, Arabis confinis, Arabis connexa, Arabis drummondii, Arabis drummondii var. connexa, Arabis drummondii var. oxyphylla, Arabis oxyphylla, Boechera angustifolia, Boechera brachycarpa, Boechera drummondii, Erysimum drummondii, Turritis drummondii) -
Ashy Rockcress: Boechera subpinnatifida (Synonym: Arabis subpinnatifida) -
Woody Rockcress: Boechera suffrutescens (Synonyms: Arabis suffrutescens, Arabis suffrutescens var. suffrutescens)
Tower Mustard, Tower Rockcress: Turritis glabra (Synonyms: Arabis glabra, Arabis glabra var. furcatipilis, Arabis glabra var. glabra) -