SPURGE FAMILY 



35 



margin crenulate; fifth gland short, densely long-hairy; staminate flowers 15-16; capsule smooth, 

 4.5-5 mm. long, broadly-oblong, truncate, cylindrical, roundly 3-lobed; seeds white or mottled 

 with brown, 3 mm. long, cylindrical, oblong-ovoid, with low irregular vermiculate ridges. 



Common on dry openly wooded mountain slopes. Transition and Canadian Zones; Mount Pinos, Ventura 

 County, to Laguna Mountains, San Diego County, California, east to Arizona and Utah. Type locality: Talley's 

 Ranch, Cuyamaca Mountains, San Diego County, California. May-Aug. 



10, Euphorbia Esula L. Leafy Spurge. Fig. 3042. 



Euphorbia Esula L. Sp. PL 461. 1753. 



Tithymalus Esula Scop, Fl. Cam. ed. 2. 1: 338. 1772. 



Euphorbia virgata Waldst. & Kit. PI. Rar. Hung. 2: 176. *. 162. 1805. Not Desf. 1804. 



Tithymalus virgatus Kl. & Gke. ex Garcke Fl. Deutschl. ed. 4. 292. 1858. 



Perennial from a rootstock, glabrous; stems erect, few to several, 4-7 dm. tall, often with 



sterile densely leafy branches and numerous fertile branches below the umbel ; rays 7-12, 2-7 cm. 



long, 2-3 times dichotomous. Stem-leaves 3-6 cm. long, oblong-linear to linear ; umbel-leaves 



ovate-lanceolate to oblong-ovate, 1-2 cm. long; floral leaves yellowish green, reniform-cordate 



to deltoid-cordate, entire, sessile; involucres glabrous, campanulate to obconical, 1.5-2 mm. in 



diameter; glands 1.5-2 mm. long, crescentic, the horns often denticulate; fifth gland scarcely 



equaling the other glands, tomentose ; sinus narrowly U-shaped, not depressed ; staminate flowers 



11-21; capsule rugulose, glabrous, depressed-globose, 3 mm. long, roundly 3-lobed; seeds brown 



or whitish, 2.5 mm. long, oblong-cylindrical, smooth. 



A field- weed introduced from Europe; Kititas, Klickitat, and Whitman Counties, Washington, and Modoc 

 and Siskiyou Counties, California. Type locality: Europe. April-Oct. 



3035. Euphorbia Lathyris 



3036. Euphorbia Helioscopia 



3037. Euphorbia spathulata 



3038. Euphorbia Peplus 



3039. Euphorbia crenulata 



3040. Euphorbia incisa 



