1922.] REVISION OF CALIFORNIA ARCTOSTAPHYLI 79 



Creek, Howell Mt. (berry viscid), Jepson 6826, 6840; Chiles Mill, 

 Chiles Creek, Jepson 9067. 



Ref. — Arctostaphylos viscida Parry, Bull. Cal. Acad. 2:492 

 (1887), type loc. lone, Amador Co., Parry (Mar. 9, 1887). 



3. A. mariposa Dudley is very closely related to A. viscida. 

 It is distinguishable from that species by its glandular-hairy branch- 

 lets, peduncles and ovary but the differentiae are sometimes difficult 

 to apply. Both are white-foliaged manzanitas of the same size and 

 method of branching. A. mariposa may not be eventually sustainable 

 as a species. Its inflorescence is, however, remarkably glandular — ■ 

 so glandular that it is noticeable that the flowers stick to the cloth- 

 ing of travelers passing through the chaparral. 



Locs. — Columbia, A. L. Grant 621; Yankee Hill, Jepson 6450; 

 Confidence, Tuolumne Co., Jepson 7695; Big Creek, Big Oak Flat 

 road, Jepson 8341; Mariposa, Congdon; El Portal, Jepson 5671; 

 Tehipite Valley, Hall & Chandler 491. 



Var. bivisum Jepson n. var. Leaves dark green, V/% to 2 x /2 in. 

 long; branchlets, glandular-hairy and somewhat dusky; berries 

 whitish with a somewhat transparent or lucent quality. — Yosemite 

 Park: near Wawona, Jepson 5658; Hetch-Hetchy, Jepson 3452 

 (type). 



Refs. — Arctostaphylos mariposa Dudley; Eastw., Sierra Club 

 Publ. 27:52 (1902), type loc. "Millwood and King's River Canon," 

 Eastwood. 



4. A. patula Greene grows at higher altitudes than any of the 

 preceding species. It inhabits the Yellow Pine belt in all the higher 

 ranges of California and also spots the canon tali with low dark 

 green dots on a white granite ground. It is commonly the only 

 species in its area or the only erect species. It is remarkable for its 

 bright green glabrous leaves reminiscent of A. stanfordiana. Its 

 berries are medium sized, glabrous, and usually though not always 

 very hard when mature. The root develops into a globose or carrot- 

 shaped structure which crown-sprouts after fire or mutilation. It 

 does not form a broad root-crown structure like A. glandulosa. 

 The branches are often weighted down by winter snow and these 

 at their depressed bases often root by adventitious rootlets. In- 

 deed after fire this species spreads in circles in this way. 



A. patula has the widest range of any Californian species and is 

 most abundant in individuals. It is remarkably uniform in habit 

 and in technical characters throughout its range. 



Locs. — Sierra Nevada: McCloud, Jepson 5743; Upper Fall River 

 Valley, Jepson 5775; Susanville, Jepson; Johnstown, L. S. Smith; 

 Taylorsville, Plumas Co., Jepson 8017; Plumas Co., Piatt; Brush 

 Creek, Butte Co., Kate Conger; Sierra ville, Jepson; Mt. Tallac, 

 Jepson 8132; American River, Kennedy 158; Bald Mt., near Sonora, 

 A. L. Grant 667; Strawberry, Tuolumne Co., A. L. Grant 22; 

 Glacier Pt., Yosemite, Jepson 5659; Patterson Mt., Fresno Co., 

 A. E. Wieslander; Millwood, Jepson 2778; Wawona (towards 



