Checklist » Brassicaceae » Arabis eschscholtziana
Last updated 6/3/2021 by David Giblin.
Arabis eschscholtziana Andrz.[FNA7, HC2]
hairy rockcress, Pacific coast rockcress

Publication: Fl. Altaica. 3: 25. 1831.

Origin: Native

selected vouchers: WTU

Notes: FNA7: " G. A. Mulligan (1996) recognized Arabis eschscholtziana as a distinct species; R. C. Rollins (1941, 1993) treated it as a variety of A. hirsuta. As discussed under A. pycnocarpa, A. hirsuta does not occur in North America, and the characters separating all three species (see key to species), as well as the different ploidy levels, support Mulligan\'s conclusion.

Both M. Hopkins (1937) and R. C. Rollins (1941, 1993) recognized the glabrous or subglabrate forms native to North America as a distinct variety, var. glabrata; G. A. Mulligan (1996) did not accord such forms any taxonomic status. Glabrous and subglabrate forms occur in both Arabis eschscholtziana and A. pycnocarpa and sometimes even within a population that has moderately to densely pubescent forms. I support Mulligan\'s view in not recognizing the glabrous forms as an infraspecific taxon."

References: (none)

Synonyms & Misapplied Names:
Arabis hirsuta (L.) Scop., misapplied[HC]
Arabis hirsuta (L.) Scop. var. eschscholtziana (Andrz.) Rollins[HC]
Arabis hirsuta (L.) Scop. var. glabrata Torr. & A. Gray[HC]