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|Jepson eFlora: Taxon page
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|Family: Euphorbiaceae||View Description||Dichotomous Key|
|Genus: Euphorbia||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Euphorbia davidii Subils
Habit: Annual. Stem: erect, branches ascending from base, 2--5 dm, hairs sparse, stiff, recurved. Leaf: alternate at distal-most nodes, generally opposite proximal to that, petioled; distal crowded, involucre-like, often proximally +- white; blade 4--8 cm, elliptic to lanceolate, coarsely toothed, abaxially recurved-hairy, base tapered, tip acute. Inflorescence: bracts subtending cyathia +- white or green throughout or proximally +- white and distally green; cyathia in tight cyme-like clusters at branch tips; involucre 2--3 mm, obconic, glabrous; glands 1--3, +- 1 mm; transversely oblong, cupped; petal-like appendage 0. Staminate Flower: 10--20. Pistillate Flower: styles divided +- to base. Fruit: 3.5--4 mm, depressed-spheric, lobed, glabrous or sparsely strigose. Seed: 2.4--3 mm, >= 2.2 mm wide, ovoid, 3-angled, coarsely tubercled; knob reduced.
Ecology: Disturbed sites; Elevation: +- 0 m. Bioregional Distribution: ScV; Distribution Outside California: native to central United States. Flowering Time: Jul Note: Once collected in 1962, presumed extirpated. Generally reported as Euphorbia dentata.
eFlora Treatment Author: David J. Keil, Thomas J. Rosatti, Mark H. Mayfield & Daryl Koutnik
Jepson Online Interchange
Previous taxon: Euphorbia cyathophora
Next taxon: Euphorbia dendroides
Citation for this treatment: David J. Keil, Thomas J. Rosatti, Mark H. Mayfield & Daryl Koutnik 2017. Euphorbia davidii, Revision 1, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=79300, accessed on January 21, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on January 21, 2017.