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|Family: Euphorbiaceae||View Description||Dichotomous Key|
|Genus: Euphorbia||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Euphorbia myrsinites L.
Habit: Perennial herb, evergreen, glabrous. Stem: decumbent to ascending, <= 4 dm, glaucous. Leaf: alternate, in distinct vertical rows, sessile, fleshy; stipules thread-like; blade 1--2.5 cm, obovate to +- round, with sharp point at tip, +- entire to minutely crenate; distal-most whorled. Inflorescence: 1° inflorescence branches in umbel-like cluster from axils of whorled leaves; cyathia in leafy-bracted cyme-like clusters; bracts opposite, sessile, triangular-ovate, entire, +- yellow; involucre 4--5 mm, bell-shaped, green; glands 4, 1.5--2 mm, transversely oblong, with 2 distally dilated, often slightly lobed horns, yellow; petal-like appendage 0. Staminate Flower: 16. Pistillate Flower: styles undivided to forked < 1/10. Fruit: (4)5--7 mm, spheric, lobed. Seed: (2)3--4 mm, oblong, +- 4-angled, with +- worm-like papillae (smooth), gray-brown; knob present.
Ecology: Streambanks, roadside ditches, disturbed slopes; Elevation: < 10 m and +- 1100 m. Bioregional Distribution: CCo (Albany Bulb, Alameda Co.), n SNH (near Quincy, Plumas Co.); Distribution Outside California: especially United States; native to southeastern Europe, Asia Minor. Flowering Time: Mar--Apr Note: Common in United States gardens, where inclined to proliferate by seed; escaped, invasive in several western states, listed as noxious in Oregon, Colorado, Utah (Salt Lake Co.); expected to spread in California and other places with Mediterranean climate.
eFlora Treatment Author: David J. Keil, Thomas J. Rosatti, Mark H. Mayfield & Daryl Koutnik
Jepson Online Interchange
Previous taxon: Euphorbia misera
Next taxon: Euphorbia nutans
Citation for this treatment: David J. Keil, Thomas J. Rosatti, Mark H. Mayfield & Daryl Koutnik 2016. Euphorbia myrsinites, Revision 1, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=25582, accessed on September 25, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on September 25, 2016.