|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 to perennial herb. Stem: erect, simple or sparingly branched. Leaf: simple, basal and cauline, alternate, petioled or distal sessile; blade entire, toothed or pinnately lobed. Inflorescence: heads radiate or discoid, 1--few, terminal; peduncle long, stout; involucre disk-shaped; phyllaries +- equal or unequal in 1--3 series, spreading or reflexed; receptacle generally columnar to conic or +- spheric, paleate; paleae oblong, entire, folded around fruits, hairy distally. Ray Flower: 0 or 7--21, sterile; corolla yellow, ray 2--6 cm. Disk Flower: many; corolla green-yellow to dark brown-purple, diam of tube and throat +- equal; anther tip triangular; style tips rounded or blunt-triangular to long-tapered. Fruit: oblong, +- 4-angled; pappus a crown of fused scales or 0.
Species In Genus: 23 species: North America. Etymology: (O.J. Rudbeck, 1630--1702, and O.O. Rudbeck, 1660--1740, botany professors at Uppsala, Sweden)
eFlora Treatment Author: Lowell E. Urbatsch
Jepson Online Interchange
Key to RudbeckiaPrevious taxon: Rigiopappus leptocladus
Next taxon: Rudbeckia californica
Citation for this treatment: Lowell E. Urbatsch 2016. Rudbeckia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=592, accessed on April 30, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on April 30, 2016.