Jepson eFlora
Key to families | Table of families and genera

Key to Arabis

View taxon page for Arabis

(For a list of species in Arabis, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

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].
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