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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 [per] from taproot, or subshrub.
Leaf: simple, alternate, entire to deeply pinnately lobed; teeth or lobes often ± bristle-tipped.
Inflorescence: heads radiate or discoid, 1 or in cyme-like clusters; involucre obconic, bell-shaped, or hemispheric; phyllaries graduated in 2–5 series, persistent, spreading or reflexed in fruit, proximally generally straw-colored, distally green; receptacle convex, shallowly pitted, glabrous, epaleate.
Ray flower: 0 or 25–35; corolla white to lavender [blue].
Disk flower: 12–45; corolla yellow; anther tip lanceolate; style tips triangular to linear.
Fruit: narrowly oblong, several- to many-ribbed, moderately to densely appressed-hairy; pappus of many unequal bristles ( ray pappus occasionally 0), generally ± white.
9 species: sw North America. (Latin: dry, from habitat) [Hartman & Bogler 2006 FNANM 20:401–405]
Unabridged references: [Morgan & Hartman 2003 Sida 20:1387–1416]
1. Ray flowers present ..... A. arizonica
1' Ray flowers 0 ..... A. carnosa
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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