Jepson eFlora
Key to families | Table of families and genera

Key to Arabis

View taxon page for Arabis

1. Cauline leaf bases lobed or sagittate

2. Petals (5.5)6.5–9(10) mm; bases of lateral sepal pair sac-like; fruit 1.2–2 mm wide; cauline leaves (2)4–12(18), generally well-spaced ..... A. eschscholtziana

2' Petals 3.5–5(5.5) mm; sepal base not sac-like; fruit 0.8–1(1.2) mm wide; cauline leaves (7)10–45(61), generally overlapping ..... A. pycnocarpa var. pycnocarpa

1' Cauline leaf bases tapered, not lobed or sagittate

3. Hairs of basal leaves stellate, 3- or 4-rayed ..... A. modesta

3' Hairs of basal leaves simple to 2(4)-rayed or 0

4. Seeds ± round, 2–2.5 mm; fruit 2–3 mm wide ..... A. blepharophylla

4' Seeds oblong, 1–1.3 mm wide; fruit 1.5–2 mm wide

5. Plant glabrous or with a few simple hairs at teeth tips of basal leaves; fruit 2–4 cm ..... A. mcdonaldiana

5' Plant moderately to densely hairy, hairs simple, forked; fruit (3)4.5–5 cm ..... A. oregana


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.