|University of California, Berkeley|
Key to families | Table of families and genera
1. Ray flower pistillate; receptacle paleate throughout, paleae lanceolate to oblanceolate, weakly folded, ± keeled, tip spiny-acuminate; fruit ribs smooth or weakly tubercled; stem branched mostly proximally ..... A. arvensis
1' Ray flower sterile; receptacle paleate distally, paleae needle-like to awl-shaped; fruit ribs ± tubercled; stem branched distally or ± throughout ..... A. cotula
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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