(431) 
Specimens examined: Mt. Wilson trail, altitude 1000 meters, 
Abrams 1515. 
4. COMAROSTAPHYLIS. 
1. COMAROSTAPHYLIS DIVERSIFOLIA (Parry) Greene, Bull. Calif. 
cad. 2: 406. 1887. 
Arctostaphylos arguta diversifolia Parry, Proc. Davenp. Acad. 4: 
35. 1od4. 
Arctostaphylos diversifolia Parry; A. Gray, Syn. Fl. 2, ed. 2, pt. 1: 
397. 1886. 
Type locality: “In Jamul Valley.” The first of several localities 
mentioned, and the only one from which flowering specimens were 
obtained. 
Distribution: Santa Monica Mountains, southward to northern 
Lower California, and on the islands off the coast, as far north- 
ward as Santa Cruz Island. Upper and Lower Sonoran. 
Specimens examined: Santa Cruz Island, Grinnell, Sept. 3, 
1903; Topango Canyon, Santa Monica Mountains, Hasse, July 
14, 1906. 
5. XYLOCOCCUS. 
1. XyLococcus Bicotor Nutt. Trans. Am. Phil. Soc. II. 8: 259. 
1843. 
Comarostaphylis bicolor Klotzsch, Linnaea 24: 78. 1851. 
Arctostaphylos bicolor A. Gray, Proc. Am. Acad. 7: 366. 1867. 
Arctostaphylos Clevelandi A. Gray, Syn. Fl. 2, pt. 1: 29. 1878. 
Type locality: “Hab. Monterey, Upper California.” This is 
probably an error for the species is not known in the Monterey 
region. Nuttall’s specimens no doubt came from San Diego. 
Distribution: In the chaparral on the mesas and foothills of 
western San Diego County, southward to northern Lower Cali- 
fornia, also on the islands off the coast. Upper and Lower Sonoran. 
Specimens examined: Cottonwood Grade, near Potrero, Abrams 
3729. 
6. UVA-URSI. Manzanita or BEARBERRY. 
Pedicels and ovaries glabro 
Stone solid, broadly lpi merely angled or ribbed; branchlets, inflores- 
ence and young leaves canescent. 1. U. Parryana,. 
Stone lobed, ee globose, irregularly separable into nutlets. 
Branchlets, inflorescence and young leaves canescent; leaves becom- 
ing dull-green . U. pungens. 
