EUPHORBIA, SECTION TITHYMALUS. 107 
the main stem; stem leaves obovate spatulate, or cuneate, 
the lower short petioled and retuse or even obcordate, the 
upper rounded at the apex, 8 to 15 mm. wide, 1 to 3 cm. 
long, almost entire to crenate serrulate; floral leaves ovate 
elliptical, low serrulate or crenulate, mostly very obtuse, 6 
to 10 mm. wide, 10 to 15 mm. long; involucre broad cam- 
panulate; lobes and bracts almost smooth or ciliate with a 
few short hairs; capsule almost globose, 3 mm. in diam- 
eter, with many short warts on the upper part; styles 1 to 
1.5 mm. long, free, bifid almost to the base ; seeds ellipsoid 
lenticular, yellowish brown, 1.8 mm. long, 1.3 mm. wide, 
1 mm. thick, or often smaller, the depth of the reticulations 
much varied, netted, usually prominent and forming large 
areolae. — Southern Washington to Lower California, 
mostly in the interior. — Plates 22, 23. 
Specimens examined from Oregon (Howell, Ashland, 1889; Leiberg, 
Hoover Creek, 135, 1894; Howell, Roseburg, 721, 1887) ; California (East- 
wood, Brentwood, 1893; M. K. C., Amador Co., 1886; Mrs. Brandegee, 
Alameda Co., 1892; Hartweg, Sacramento Valley, 1951; Stillman, Upper 
Sacramento; Palmer, Chico, 2082, 1892; Baker, Modoc Co., 1894; Brewer, 
Nipoma Ranch, 416, 1861; Fitch, in Herb. Torrey; Snyder, La Jolla, 
1895; Mrs. Austin, Chico, 128, 1896; K. C., Antioch, 1883; Torrey, New 
Almaden, 477, 1865; Brewer, Corral Hollow, 1214, 1861, from a dry hill, 
leaves thick, much branched, internodes long, seeds deeply reticulated; 
Parry, 14, 1874, like the last but slender and low and with low reticulated 
seeds; a specimen from the Harvard Botanical Garden from seed from 
the St. Petersburg Garden is similar). 
A slender form, with thinner leaves and often many 
stems, which occurs mostly in the southern half of Cali- 
fornia, is represented by the following: Mrs. Brandegee, 
Santa Catalina Island; Bolander, Mono Pass, 6414, 1866; 
Davidson, Los Angeles, 1890; Orcutt, Jumal Valley, 
1889. 
In the southern range of the species the plants are 
scarcely over one decimeter high; upper leaves more 
ovate cordate; styles not so deeply divided. The follow- 
ing are of this form: California (Jones, San Luis Obispo, 
3482, 1882; Miles, San Luis Obispo); Lower California 
(Orcutt, 237, 1882; Brandegee, San Enrique, 1889). 
23 
