Directory       News       Site Map       Home
         
    Jepson eFlora
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.

 

DIMORPHOTHECA
Annual, perennial herb, subshrub.
Stem: prostrate to erect, generally branched.
Leaf: generally alternate, simple, entire to pinnately lobed.
Inflorescence: heads radiate, generally 1; peduncle long; involucre hemispheric or bell-shaped; phyllaries in 1–2 series, linear to lanceolate; receptacle flat or convex, epaleate.
Ray flower: <= 20, generally fertile; ray oblong, 3-toothed, adaxially yellow, orange, pink, purple, or white, sometimes abaxially blue or purple.
Disk flower: many, bisexual or staminate; corolla tube very short, throat long, yellow or purple; anther base sagittate, short-tailed, tip ovate or triangular- ovate; style with distal collar of hairs, branches very short, appendages widely obtuse.
Fruit: ray fruit 3-angled, smooth or tubercled, glabrous, angles sometimes narrowly winged; disk fruit (or sterile ovary) smooth, obovate, flattened, winged, glabrous; pappus 0.
19 species: s Africa. (Greek: 2 forms of fruits) [Strother 2006 FNANM 19:380–381, 382–383] Dimorphotheca pluvialis (L.) Moench not naturalized.
Unabridged references: [Nordenstam 1994 Compositae Newsletter 25:46–49]

Key to Dimorphotheca

1. Annual; disk flowers bisexual, forming fruits; adaxial face of ray yellow or orange, sometimes violet at base or tip ..... D. sinuata

1' Perennial or subshrub; disk flowers staminate; adaxial face of ray white or ± purple

2. St ± erect, <= 1 m; leaves linear-oblong to oblanceolate; heads solitary or in leafy, cyme-like cluster ..... D. ecklonis

2' St trailing to ascending, rooting at ground contact, sometimes >> 1 m; leaves oblanceolate to obovate; heads generally solitary ..... D. fruticosa

Contact/Feedback

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].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.