( 400 ) 
Distribution: The castor bean has become fairly well natu- 
ralized in many parts of southern California, and often develops 
into small trees, 4-5 meters high. 
4. TRICHEROSTIGMA. 
I. TRICHEROSTIGMA MISERUM (Benth.) Kl. & Garcke, Monatsb. 
Akad. Berl. 248. 1859. 
Euphorbia misera Benth. Bot. Sulph. 51. 1844. 
Type locality: “San Diego,” California, and “San Quentin,” 
Lower California. 
Distribution: On bluffs near the sea at San Diego, southward 
through western Lower California, and also on the islands off the 
coast of southern California. Lower Sonoran. 
Specimens examined: Santa Catalina Island, Blanche Trask, 
Dec. 1900; San Diego, Parry, 1850; Palmer 452; Pringle, May, 
1882; Jones, 1882; Point Loma, Abrams 3458. | 
BUXACEAE. Box Famity. 
1. SIMMONDSIA. 
I. SIMMONDSIA CALIFORNICA Nutt. Lond. Journ. Bot. 
3: 401, pl. 16. 1844. 
Type locality: “Covering the sides of barren hills, in argilla- 
ceous soils, near the sea, in the vicinity of St. Diego in Upper 
California.” 
Distribution: Vicinity of San Diego, southward through north- 
ern Lower California, and eastward to Arizona. Lower Sonoran. 
Specimens examined: Oneonta, Herre, Aug., 1902; Mission 
Hills, San Diego, Abrams 3424; San Diego, Palmer 356; Parry, 
1850. 
ANACARDIACEAE. Sumac Famity. 
Leaves compound, deciduous. 
Fruit glabrous; nut globose, striate. 1. Toxicodendron. 
Fruit viscid-pubescent and often villous; nut flattened, smooth. 
2. Schmaltzia. 
Leaves simple, evergreen; nut smooth. 
Flowers in dense racemes; fruit pubescent; pericarp viscid, acid. 
3. Neostyphonia. 
Flowers in compound panicles; fruit small, glabrous; pericarp mealy. 
4. Lithraea. 
