432 CALLITRICHACEAE 



Garden weed introduced from Europe : mostl.y coastal towns and settlements. 

 Apr.-Aug. 



Locs. — Eureka, Tracy 7473; Stewarts Pt., Sonoma Co., M. S. Baker 17; Berkeley, Michener 

 4' Biolctti; Monterey, Jcpson 9752; San Bernardino, Parish 11,731. 



Refs. — EupiiouHiA PEi'LUS L. Sp. PI. 4.'J6 (1753), type European; Jopson, Fl. W. Mid. Cal. 

 263 (1901), ed. 2, 247 (1911), Man. 602 (1925). Tithymalus peplus Hill, Hort. Kew. 172=" (1768). 



19. E. palmeri Enfrelm. Wood Spurge. Stems several from the woody root- 

 crowm, erect, i^^ to l^i^ i'eet hip,li, simple but umbelliferous above with 3 or 5 rays; 

 herbag:e glabrous and glaucous; leaf-blades obovate to oblanceolate, obtuse (or 

 acute), thick, shortly petiolate, 4 to 12 lines long, those of the inflorescence very 

 broadly rhombic-ovate to subreniform, very obtuse, mostly apiculate; involucres 

 1 line long, their lobes rounded, entire, ciliate; glands shortly stipitate, crenate, 

 somewhat 2-horned; capsules ovate, 2 lines long; seeds ovoid, dark to whitish, shal- 

 lowly rugose, ly^ lines long. 



Wooded slopes in sandy soil, 4000 to 9100 feet : Southern California mountains 

 from northern Ventura Co. to San Diego Co. South to LoAver California. May-June. 



Locs. — North Creek, Mt. Pinos, Hall 6434; Big Pines, San Gabriel Mts., Peirson 3184; Fish 

 Creek, San Bernardino Mts., J. Grinnell; Strawberry Valley, San Jacinto Mts., Jepson 1307; 

 Saunders Mdw., San Jacinto Mts., C. V. Meyer 200; Julian, San Diego Co., T. Brandegee; 

 Laguna Mts., San Diego Co., Cleveland 329. 



Eefs. — Euphorbia palmeri Engelm. ; Wats. Bot. Cal. 2:75 (1880), type loc. Talley's Ranch, 

 Cuyaniaca Mts., Palmer 450; Jepson, Man. 602 (1925). Tithymalus palmeri Abrauis, Fl. Los 

 Ang. 216 (1917). 



20. E. schizoloba Engelm. Moiiave Spurge. Stems erect or decumbent at 

 base, several from the woody root-crown, branched at or near the base, the branches 

 6 to 16 inches high, at summit once to thrice dichotomous; herbage glabrous or 

 slightly puberulent, somewhat glaucous; leaf -blades ovate to obovate, cuspidate, 

 3 to 6 lines long, narrowed to a short petiole or subsessile, the floral ternate, round- 

 ovate, sessile; involucre 1 line long, its lobes truncate, notched; glands stipitate, 

 broad, irregularly toothed; styles united at base; capsules glabrous, smooth; seeds 

 oblong-ovoid, very shallowly rugulose, 1% lines long. 



Caiions, sandy washes or open desert slopes, 3000 to 4000 feet : eastern Mohave 

 Desert, north into Inyo Co. East to Nevada and Arizona. Mar.-May. 



Locs. — Sheep Hole Mts., e. Mohave Desert, Jaeger; Bonanza King Mine, Providence Mts., 

 Munz 4109; Hanaupah Canon, Panamint Range, Jepson 6967. The following spm. with less 

 lacerate glands is apparently a form of this species, although from a much lower altitude (-200 

 feet) : Figtree John Spr., w. Riverside Co., Mum 4" Sarwood 3556. 



Refs. — Euphorbia schizoloba Engelm. Proc. Am. Acad. 5:173 (1861), type loc. e. of the 

 lower Colorado River, Newberry ; Jepson, Man. 602 (1925). E. incisa Engelm. Ives Rep. 4:27 

 (1860), type loc. Long Valley, Ariz., Newberry. Tithymalus schizoloba Norton, Contrib. U. S. 

 Nat. Herb. 25:343 (1925). 



Euphorbia lathyrus L. Sp. PI. 457 (1753), type European; Jepson, Fl. W. Mid. Cal. 263 

 (1901), ed. 2, 247 (1911), Man. 601 (1925). Caper Spurge. Stout annual or biennial 1 to 3 feet 

 high, very smooth and glaucous; stem-leaves in 4 vertical ranks, the blades linear or narrowly 

 oblong, thick, 2 to 4 inches long, the floral oblong-ovate and cordate ; umbels of 3 or 4 rays, once 

 or twice forked; glands of the involucre crescent-shaped, the horns usually recurved; capsule 

 wrinkled when dry, 3 to 5 lines high, 6 to 7 lines broad. — Mediterranean species, occasionally 

 adventive about settlements or occurring in cultivated fields : Myers Ranch, South Fork Eel River, 

 Humboldt Co., Tracy 5110; West Berkeley, H. A. Walker; Skylonda, San Mateo Co., J. T. Daly 

 390; Jolon, Monterey Co., T. Brandegee ; Morro, San Luis Obispo Co., Condit; Lompoc, Condit; 

 Seven Oaks, San Antonio Canon, San Gabriel Mts., Johnston 1747. It is often planted in Cali- 

 fornia gardens under the name Gopher Plant with the belief that it is a bane to gophers. 



CALLITRICHACEAE. Water Starwort Family 



Herbs growing in shallow water or in the mud of drying vernal pools. Leaves 

 opposite, entire, exstipulate, often crowded and forming a rosette at the ends of 

 the branches; floating- type leaves 3-nerved, aquatic-type 1-nerved, usually covered 



