322 ERICACEAE 



33. Arctostaphylos Andersonii A. Gray. Santa Cruz Mountains. Fig. 3726. 



Arctostaphylos Andersonii A. Gray, Proc. Amer. Acad. 11: 83. 1876. 

 Uva-ursi Andersonii Abrams, N. Amer. Fl. 29: 98. 1914. 

 Arctostaphylos regismontana Eastw. Leaflets West. Bot. 1: 77. 1933. 



Arborescent shrub, 2-4 m. high, with erect often elongated branches, smooth dark red- 

 brown bark; branchlets setose-hispid and glandular-villous. Leaves crowded, often 4-6 cm. 

 long, ovate-oblong, acute or obtuse at the apex, sessile or nearly so and clasping at base, nearly- 

 glabrous above, more or less tomentose beneath; panicles ample, densely glandular-villous; 

 bracts foliaceous ; corolla 6-7 mm. long ; ovary densely hairy and more or less glanadular ; fruit 

 becoming nearly glabrous, depressed-globose, 6-8 mm. broad ; nutlets irregularly coalescent. 



Mountain slopes, mainly Humid Transition Zone; Santa Cruz Mountains, California. Type locality: 

 mountain slopes near Santa Cruz, California. Jan.-March. Heart-leaved Manzanita. 



Arctostaphylos Andersonii var. pallida (Eastw.) J. E. Adams ex. McMinn, 111. Man. Calif. Shrubs 

 418. 1939. (Arctostaphylos pallida Eastw. Leaflets West. Bot. 1: 76. 1933.) Erect shrub, about 1 m. high, 

 young branches viscid-pubescent. Leaves sessile, oblong, auriculate at base, 3-5 cm. long, pale green; bracts 

 foliaceous; pedicels glandular-pubescent; ovary and fruit glandular. Hills back of Piedmont, Alameda and 

 Contra Costa Counties, California. Type locality: Oakland Hills, Alameda County. 



Arctostaphylos Andersonii var. imbricata (Eastw.) J. E. Adams, ex. McMinn, loc. cit. {Arctostaphylos 

 imbricata Eastw. Proc. Calif. Acad. IV. 20: 14. 1931.) Low spreading shrub, young branches densely 

 tomentose and glandular-villous. Leaves oblong elliptic, sessile and clasping, 2.5-3 cm. long, densely 

 clothing the stems; bracts foliaceous; pedicels glandular-pubescent; corolla white, 7 mm. long; fruit depressed- 

 globose, viscid-pubescent. Type locality: San Bruno Hills, San Mateo County, California. 



34. Arctostaphylos auriculata Eastw. Mount Diablo Manzanita. Fig. 3727. 



Arctostaphylos auriculata Eastw. Bull. Torrey Club 32: 202. 1905. 

 Uva-ursi auriculata Abrams, N. Amer. Fl. 29: 98. 1914. 

 Arctostaphylos Andersonii var. auriculata Jepson, Madrono 1: 88. 1922. 



Shrub, 1-1.5 m. high, with erect branches, smooth dark red-brown bark, and glaucous 

 branchlets clothed with a dense hoary tomentum interspersed with long whitish hairs. Leaves 

 oblong to ovate, obtuse or acute and mucronate at apex, nearly or quite sessile and strongly 

 auriculate at the base, crowded and overlapping on the branches, pallid and cinereous-tomentose 

 on both surfaces ; panicles small and close, the branches, bracts and pedicels tomentose ; calyx- 

 lobes ciliate on the margins, otherwise glabrous ; ovary pubescent with spreading hairs ; fruit 

 depressed-globose, light brown. 



Dry chaparral-covered slopes. Upper Sonoran Zone; Contra Costa and Alameda Counties, California. 

 Type locality: Mount Diablo. Feb. -March. 



35. Arctostaphylos pajaroensis J. E. Adams. Pajaro Manzanita. Fig. 3728. 



Arctostaphylos Andersonii var. pajaroensis J. E. Adams ex. McMinn, 111. Man. Calif. Shrubs 418. fig. 492. 



1939. 

 Arctostaphylos pajaroensis J. E. Adams, Journ. E. Mitchell Sci. Soc. 56: 41. 1940. 



Erect shrub with compact crown, 1,-3 m. high, bark exfoliating in shreds tardily, but stems 

 finally becoming smooth, young branchlets tomentose and bristly white-hairy. Leaves ovate- 

 triangular, 2-3 cm. long, auriculate-clasping at base, basal lobes acute or rounded, often serrate, 

 glabrous, green or slightly glaucous. 



Sandy hills, Upper Sonoran Zone; south of Pajaro River, Monterey County, California. Type locality: 

 sandy hills west of Prunedale. Jan.-March. 



36. Arctostaphylos pechoensis Dudley. Pecho Manzanita. Fig. 3729. 



Arctostaphylos pechoensis Dudley ex Abrams, N. Amer. Fl. 29:98, as a synonym. 1914. 



Uva-ursi pechoensis Abrams, loc. cit. 



Arctostaphylos Andersonii var. pechoensis Jepson, Madrono 1: 89. 1922. 



Low shrub, 1 m. high or less, with smooth dark red-brown bark, the root crown enlarged 

 and sprouting after fire ; branchlets finely tomentose and setose-hispid. Leaves ovate to ovate- 

 oblong, 2-3.5 cm. long, acute at the apex, strongly auriculate and clasping at the nearly or 

 quite sessile base, pale green, firm-coriaceous, prominently net-veined on the lower surface and 

 finely but usually sparsely tomentose; panicles congested, short; bracts broadly lanceolate, 8-12 

 mm. long, finely tomentose and somewhat viscid; pedicels nearly or quite smooth; calyx-lobes 

 ciliate on the margins, otherwise glabrous ; ovary sparsely hairy toward the summit ; fruit 

 depressed-globose, light brown; nutlets irregularly coalescent, thin and acutely carinate on the 

 back. 



Hilhides and canyon slopes, Upper Sonoran Zone; Coast Ranges of San Luis Obispo and northern Santa 

 Barbara Counties, California. Type locality: head of Wild Cherry Canyon, Pecho Mountains, San Luis Obispo 

 County. Feb.-April. 



Arctostaphylos pechoensis var. viridissima Eastw. Leaflets West. Bot. 1:62. 1933. (Arctostaphylos 

 viridissima McMinn, 111. Man. Calif. Shrubs 419. 1939; A. Andersonii var. viridissima Jepson, Fl. Calif. 3: SO. 

 1939.) Leaves glabrous, bright green and shining. Santa Cruz Island, and on the mainland near the coast in 

 La Purisima Hills, northern Santa Barbara County, California. Type locality: China Harbor, Santa Cruz 

 Island. 



37. Arctostaphylos glandulosa Eastw. Eastwood's Manzanita. Fig. 3730. 



Arctostaphylos glandulosa Eastw. Proc. Calif. Acad. III. 1 : 82. 1897. 



Low Spreading intricately branched shrub, with the enlarged burl-like base stump-sprouting 



