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Key to families | Table of families and genera
This text currently parallels The Jepson Manual: Vascular Plants of California, Second Edition that is now available at the University of California Press.
Text appearing in blue on this page will not appear in the printed book; it will be displayed only on the Web. Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.
Annual; hairs simple, or short-stalked with 2–4- rays.
Stem: simple or branched at base, leafy.
Leaf: basal not rosetted, short petioled, entire or dentate; cauline short-petioled or sessile, base not lobed, entire or dentate.
Inflorescence: 1-sided; bracts 0.
Flower: sepals erect, early- deciduous, base not sac-like; petals < to > sepals or rudimentary, white.
Fruit: silicle, reflexed, indehiscent or late- dehiscent, unsegmented, round or obovate to elliptic, flat parallel to septum, glabrous to hairy; pedicel recurved.
Seed: 1 or 6–12, in 1 row, flat, not winged.
2 species: w North America, nw Mex. (Greek: without fruit fringe)
Unabridged note: Jepson 1901 Fl W Calif:224 united Athysanus and Heterodraba under the former, thus establishing nomenclatural priority. The 2 genera are indistinguishable in every character except those in the key below. Molecular data support the placement of the combined genus near Draba and Arabis.
1. Fr indehiscent, not twisted, hairs hooked if present; septum 0; seed 1 ..... A. pusillus
1' Fr late-dehiscent, generally twisted, hairs not hooked if present; septum present; seeds 6–12 ..... A. unilateralis
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [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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