HEATH FAMILY 317 



corolla white; fruit light brown, slightly depressed, 6-8 mm. broad; nutlets irregularly coales- 

 cent. 



Rocky hillsides. Upper Sonoran Zone; Santa Cruz Island, southern California. Type locality: Santa 

 Cruz Island, the definite station not given, but according to Miss Eastwood (Leaflets West. Bot. 1:62.) 

 "Dr. Greene collected both forms, the pubescent one in the Herbarium of the California Academy of Sciences, 

 the glabrous one in Parry's Herbarium at the State College of Iowa." March. 



Arctostaphylos insularis var. pubescens Eastw. Leaflets West. Bot. 1 : 62. 1933. Young branchlets and 

 rachis of the inflorescence, glandular-hirsute; otherwise like the typical species. Santa Cruz Island. 



20. Arctostaphylos viscida Parry. White-leaved Manzanita. Fig. 3713. 



Arctostaphylos viscida Parry, Bull. Calif. Acad. 2: 492. 1887. 

 Uva-ursi viscida Heller, Muhlenbergia 9: 68. 1913. 



Erect branching shrub forming a rounded compact bush 2-3 m. high, with smooth dark 

 red-brown bark and pale glaucous-green, glabrous or rarely slightly tomentose twigs. Leaves 

 suborbicular to oblong, usually ovate, 2.5-4 cm. long, rounded to acutish and mucronate at apex, 

 cordate to acute at base, very pale glaucous-green and glabrous, firm-coriaceous ; petioles 8-12 

 mm. long ; panicles open, its branches glabrous ; bracts 2-3 mm. long, triangular-acuminate ; 

 pedicels slender, 10-12 mm. long, villous-glandular and viscid; calyx-lobes somewhat ciliate; 

 corolla light pink ; ovary glabrous ; fruit depressed-globose, 6-8 mm. broad, light brown ; nutlets 

 4-5, carinate and roughened on the back. 



Dry hillsides, usually in gravelly or stony ground. Upper Sonoran Zone; Jackson and Josephine Counties, 

 southern Oregon south to the inner foothills of the northern Coast Ranges and the southern Sierra Nevada, 

 California. Type locality: foothills of the Sierra Nevada. March-April. 



Arctostaphylos pulchella Howell, Fl. N.W. Amer. 416. 1901. Aborescent shrub, 2-4 mm. high, old 

 branches polished and dark brown, young twigs minutely pubescent. Leaves broadly ovate to oblong, obtuse, 

 pale gray-green and smooth; bracts acuminate-ovate, minutely pubescent; pedicels much longer than the bracts, 

 sparingly glandular; ovary glabrous. Mountain slopes. Arid Transition Zone; Siskiyou Alountains, Josephine 

 and Jackson Counties, Oregon. Type locality: west of Andersons, Josephine County. 



21. Arctostaphylos mariposa Dudley. Mariposa Manzanita. Fig. 3714. 



Arctostaphylos mariposa Dudley in Eastw. Sierra Club Publ. No. 27:52. 1902. 

 Uva-ursi mariposa Abrams, N. Amer. Fl. 29: 99. 1914. 



An erect arborescent shrub of the general habit of the preceding species ; branchlets glandu- 

 lar-villous or -pubescent. Leaves suborbicular to narrowly ovate, very pale gray-green, scabrous, 

 otherwise glabrous or glandular-pubescent or -villous ; pedicels slender, glandular-villous ; calyx- 

 lobes glandular-villous ; ovary glandular-pubescent; fruit depressed-globose, glandular, light 

 brown. 



Dry hillsides, Upper Sonoran Zone; common in the foothills and lower edges of the yellow pine belt of 

 the Sierra Nevada, California. Type locality: Millwood and Kings River canyons, southern Sierra Nevada, 

 California. March-April. 



Arctostaphylos mariposa var. bivisura Jepson. Madroiio 1 : 79. 1922. (.^. /e/'^onii Eastw. Leaflets West. 

 Bot. 1: 119. 1934.) Leaves bright glossy green; pedicels and branchlets sparsely glandular-pubescent. Locally 

 distributed near Wawona and Hetch-Hetchy, Mariposa County, California. Possibly a hybrid between A. mari- 

 posa Dudley and A. patula Greene. 



22. Arctostaphylos drupacea (Parry) J. F. Macbride. Cuyamaca Manzanita. 



Fig. 3715. 



Arctostaphylos Pringlei var. drupacea Parry, Bull. Calif. Acad. 2: 495. 1887. 

 Uva-ursi drupacea Abrams, Bull. N.Y. Bot. Gard. 6: 434. 1910. 

 Arctostaphylos drupacea J. F. Macbride, Contr. Gray Herb. No. 53: 16. 1918. 



Erect compactly branched shrub, 1-2 m. high, with smooth dull red-brown bark and densely 

 glandular-villous branchlets. Leaves broadly ovate to narrowly obovate, rounded to acute at 

 apex, obtuse to cordate at base, 2.5-4 cm. long, pale gray-green, scabrous, more or less glandu- 

 lar-villous at the base and on the margins, midvein prominent ; petioles glandular-villous ; bracts 

 membranous, deciduous, pinkish, 5-6 mm. long, glandular-villous; pedicels slender, 10-15 mm. 

 long, glandular-villous; calyx-lobes lanceolate, 3 mm. long, glandular-villous, ciliate on the 

 margins ; fruit ovoid, glandular-villous ; nutlets united into a solid ellipsoid stone, carinately 

 ribbed and rugose in the intervals, sharply pointed at both ends. 



Coniferous forests. Arid Transition Zone; San Bernardino Mountains, southern California to northern 

 Lower California. Type locality: Cuyamaca Mountains, San Diego County, California. March-April. 



23. Arctostaphylos morroensis Wiesl. & Schr. Morro Manzanita. Fig. 3716. 



Arctostaphylos morroensis Wiesl. & Schr. Madrofio 5: 42. fig. 2a. 1939. 



Shrub 1 . 5-2 m. high with grayish green foliage and rough shreddy bark, branchlets densely 

 appressed-tomentulose and usually rather sparsely hirsute-bristly. Leaves 1.5-3 cm. long, oblong 

 to oblong-ovate, usually truncate at base varying from subcordate to rounded, rounded to acutish at 

 apex, minutely apiculate, densely tomentulose beneath, less so or rarely glabrous above ; petioles 3-4 

 mm. long, tomentose and hirsute-bristly ; inflorescence compact, usually shorter than the leaves ; 

 bracts foliaceous, oblong-lanceolate or the lowest oblanceolate, densely tomentose on both sides 

 and bristly-ciliate on the margins; pedicels glabrous; corolla white or pinkish, 5-7 mm. long; 

 ovary densely tomentose; fruit slightly depressed-globose, yellowish brown, about 10 mm. 

 broad ; nutlets separating. 



Sandy hills near the coast. Upper Sonoran Zone; vicinity of Morro Bay, San Luis Obispo County, Cali- 

 fornia. Type locality: Hazard Canyon, south of Morro Bay. Jan.-March. 



