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RUTACEAE. RveE Famity. 
Leaves alternate; fruit a 2-lobed coriaceous capsule. 1. Thamnosma. 
Leaves opposite; fruit a drupe. 2. Cneoridium. 
1. THAMNOSMA. 
1. THAMNOSMA MONTANUM Torr. & Frem. in Frem. Second 
Rep. 313. 1845. 
Type locality: “Passes of the mountains, and on the Virgin 
river in Northern California.” 
Distribution: Western borders of the Colorado Desert, extend- 
ing southward into northern Lower California, and eastward to 
Arizona and southern Utah. 
Specimens examined: Nlission Creek bench, eastern base of the 
San Bernardino Mountains, Parish 2987; Jacumba Hot Spring, 
Abrams 3651. 
2. CNEORIDIUM. 
1. CNEORIDIUM DUMOsUM (Nutt.) Hook. f.; Brew. & Wats. 
Bot. Calif. 1: 97. 1876 
Pitavia dumosa Nutt.; Torr. & Gray, Fl. N. Am. 1: 215. 1838. 
Type locality: “St. Diego, California.” 
Distribution: One of the principal components of the chaparral 
in the vicinity of San Diego, extending south into northern Lower 
California, and eastward on the desert slopes of the Cuiamaca 
and the San Jacinto Mountains; also in Arizona. Lower Sonoran. 
Specimens examined: Near San Dieguito (Bernardo), Abrams 
3378; Valley Center, McClatchie, March, 1893. 
POLYGALACEAE. 
1. POLYGALA. 
1. Potycata cornuta Kell. Proc. Calif. Acad. 1: 62. 1855 
Polygala californica Nutt. Torr. & Gray, Fl. N. Am. 1: 671. 
1840, as a synonym 
Polygala Fishiae Bar: Proc. Davenp. Acad. 4: 39. 1884. 
Type locality: Placerville. 
Distribution: Sierra Nevada and the mountains of Santa Bar- 
bara County, southward to Lower California. A slender, sparsely 
branched, shrubby plant often growing a meter or more high. 
Upper Sonoran. 
