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|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 subshrub, sticky-glandular; odor strong, considered unpleasant by most people. Leaf: basal and cauline or cauline, alternate, sessile. Inflorescence: heads radiate, many, in dense raceme- or +- panicle-like clusters; involucre +- ovoid, +- bell-shaped when pressed; phyllaries graduated in 3--4 series, reflexed in fruit; receptacle flat, pitted, epaleate. Ray Flower: (6)10--18; corolla yellow, ray 3-lobed, not or barely or clearly exceeding phyllaries. Disk Flower: 9--14 or 25--40; corolla 4--5-lobed, yellow; anther base tailed, tip acute; style tips linear. Fruit: ellipsoid to +- cylindric, abruptly narrowed below pappus, glandular-hairy; pappus of barbed bristles, in 1 row, fused at base.
Species In Genus: 2 species: western Europe, Mediterranean, southwestern Asia; introduced, naturalized elsewhere. Etymology: (M. Dittrich, German student of Asteraceae, b. 1934) Note: Dittrichia viscosa added, as naturalized.
eFlora Treatment Author: Thomas J. Rosatti
Jepson Online Interchange
Key to DittrichiaPrevious taxon: Dimorphotheca sinuata
Next taxon: Dittrichia graveolens
Citation for this treatment: Thomas J. Rosatti 2017. Dittrichia, Revision 2, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=407, accessed on January 19, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on January 19, 2017.