|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Annual or biennial, taprooted. Leaf: basal and cauline, alternate, simple, spiny-dentate, often coarsely lobed, dark green with white blotches, +- glabrous, distal cauline reduced. Inflorescence: heads discoid, large; peduncles bracted; involucre ovoid to spheric; phyllaries graduated in 4--6 series, tips of outer and middle spreading, lanceolate to ovate, spiny-fringed and -tipped; receptacle flat, epaleate, white-bristly. Flower: many; corolla pink to purple, tube long, slender, throat abruptly wider, lobes linear; anther bases sharply short-sagittate, tips oblong; style tip long-cylindric distal to slightly swollen node, branches very short. Fruit: ovoid, slightly compressed, glabrous, attachment scar slightly angled; pappus of many flat, minutely barbed bristles, falling in a ring.
Species In Genus: 2 species: Mediterranean. Etymology: (Greek: name for thistle-like plants)
eFlora Treatment Author: David J. Keil
Jepson Online Interchange
Previous taxon: Sericocarpus oregonensis subsp. oregonensis
Next taxon: Silybum marianum
Citation for this treatment: David J. Keil 2017. Silybum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=609, accessed on January 22, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on January 22, 2017.