314 ERICACEAE 



Leaves glossy green, glabrous or nearly so, oblong to lanceolate, 2-3 cm. long, 1-2 cm. wide, generally acute at 

 both ends; panicles drooping, usually of several branches, these not perceptibly thickened above; bracts small, 

 shorter than the glabrous pedicels; corolla white, 4-6 mm. long; fruit depressed-globose, 5-8 mm. in diameter, 

 dark brown and glossy; stones usually 3, about 3 mm. long. Mountain slopes, Upper Sonoian Zone; Mount 

 Diablo, the type locality, Contra Costa County, and Mount St. Helena, Lake County, California. 



11. Arctostaphylos hispidula Howell. Howell's Manzanita. Fig. 3704. 



Arctostaphylos hispidula Howell, Fl. N.W. Amer. 415. 1901. 



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



Arctostaphylos viscosissima M. E. Peck, Torreya 32: 151. 1932. 



Arctostaphylos Stanfordiana subsp. hispidula J. E. Adams, Journ. E. Mitchell Sci. Soc. 56: 19. 1940. 



Erect shrub with rather strict branches, 5-20 dm. high, old stems very dark colored, young 

 branchlets glandular-hispidulous. Leaves oblong-lanceolate to oblong-ovate, 2.5-3.5 cm. long, 

 acute, usually sharply so at apex, acute or acutish at base, bright glossy green on both sur- 

 faces ; panicle usually ample, the branches rather slender, glandular-hispidulous, bracts triangu- 

 lar-subulate, 1-2 mm. long ; pedicels very slender, 3-5 mm. long, glabrous ; corolla pink, about 

 5 mm. long ; ovary glabrous ; fruit subglobose. 



Rocky ridges or gravelly soils, Humid Transition Zone; Coast Ranges, Curry County, and Siskiyou 

 Mountains, Oregon, to Humboldt County, California. Type locality: bottom lands along Smith River at 

 Gasquet, Del Norte County, California. March-April. 



Arctostaphylos Bakeri Eastw. Leaflets West. Bot. 1: 115. 1934. (A. Stanfordiana suhsp. Bakeri J. E. 

 Adams, Journ. E. Mitchell Sci. Soc. 56: 14. 1940.) Essentially like A. hispidula in vegetative characters 

 but flowers a little larger, slightly over 5 mm. long. Serpentine ridges, Sonoma County. Type locality : two 

 miles east of Occidental, Sonoma County, California. 



12. Arctostaphylos patula Greene. Green-leaved Manzanita. Fig. 3705. 



Arctostaphylos pungens var. platyphylla A. Gray, Syn. Fl. N. Amer. 2^: 28. 1878. 



Arctostaphylos patula Greene, Pittonia 2: 171. 1891. 



Arctostaphylos obtusifolia Piper, Bull. Torrey Club 29: 642. 1902. 



Uva-ursi patula Abrams, N. Amer. Fl. 29: 96. 1914. 



Arctostaphylos farryana var. pinctorum (Rollins) Wiesl. & Schr. Madrofio 5: 46. 1939, as to the California 



plant. 



Shrub with spreading, rigid and very crooked branches, 1-2 m. high; usually 2-3 stems 

 from a rounded crown, bark smooth and bright red-brown ; branchlets resinous-glandular to 

 glandular-pubescent, the glands often golden. Leaves ovate to suborbicular, obtuse or rounded 

 at the apex, bright yellowish green, not at all glaucous, glabrous or resinous-glandular toward 

 the base ; flowers in rather ample panicles ; rachis and bracts resinous-glandular to glandular- 

 pubescent ; bracts broadly triangular at the base, abruptly subulate at the apex, 2)-7 mm. long, 

 firm, and widely spreading or reflexed in fruit, glabrous ; pedicels glabrous, 5-7 mm. long in 

 fruit; corolla 6.5-7.5 mm. long, white tinged with pink; ovary glabrous; fruit depressed- 

 globose, 7-10 mm. broad, chestnut-brown ; nutlets irregularly coalescent, rounded on the back 

 and inconspicuously ribbed, otherwise nearly smooth. 



Open pine forests, Arid Transition Zone; southern Washington southward, mainly in the Cascade Moun- 

 tains and the Sierra Nevada to the mountains of southern California and Lower California, and eastward to 

 Utah. Plants having scattered glandular hairs on the branches occasionally occur, more or less throughout 

 the range, but in Washington and Oregon (A. obtusifolia Piper) they are the common form. At higher alti- 

 tudes often low and spreading. Type locality: pine woods at middle elevations in the Sierra Nevada, California. 

 March-May. 



Arctostaphylos acutifdlia Eastw. Leaflets West. Bot. 3:125. 1942. Low shrub 5-6 dm. high, young 

 branchlets glandular-villous, bark soon exfoliating leaving the older branches smooth and polished. Leaves 

 narrowly to broadly oblong, acute, 2.5-3.5 cm. long, glossy green and glabrous; petioles and sometimes the 

 base of the leaf-blades glandular-pubescent; bracts triangular-acuminate, much shorter than the pedicels, tiicse 

 slender, rather sparsely glandular-villous; corolla 5 mm. long; ovary and fruit glandular with rather promi- 

 nent sessile or subsessile glands. This interesting plant is known only from the original collections made from 

 a single plant found in open coniferous forest on "Long Spring Ridge between Government Flat and Long 

 Spring, Tehama County, California." 



13. Arctostaphylos Parryana Lemmon. Parry's Manzanita. Fig. 3706. 



Arctostaphylos farryana Lemmon, Pittonia 2: 68. 1890. 

 Uva-ursi Parryana Abrams, Bull. N.Y. Bot. Card. 6: 432. 1910. 



An erect much-branched shrub, 1.5-2.5 m. high, with smooth dark red-brown bark and 

 hoary tomentose branchlets. Leaves ovate to suborbicular, mostly 2.5-3.5 cm. long, obtuse or 

 rounded and prominently apiculate at ape.x, tomentulose when young, becoming rather bright 

 green and glabrous on both surfaces ; flowers in few-branched or rarely simple racemes ; rachis 

 tomentose ; bracts triangular, tomentose, the upper half thin and more or less deciduous ; pedi- 

 cels 5-7 mm. long, glabrous ; flowers 6-7 mm. long; fruit ovoid, 10-15 mm. long, chestnut-brown, 

 the pulp thin ; nutlets united into a solid 5-celled ellipsoid stone, prominently ribbed and ru- 

 gosely roughened in the intervals. 



Dry mountain slopes, Upper Sonoran Zone; southern Sierra Nevada and the Mount Pinos region south 

 to the eastern slopes of the San Gabriel and San Antonio Mountains, southern California. Type locality: 

 Tehachapi Mountains, four miles west of Keene Station, California. March. 



14. Arctostaphylos elegans Jepson. Konacti Manzanita. Fig. 3707. 



Arctostaphylos clcgans Jepson, Erythea 1: 15. 1893. 



Uva-ursi clcgans Heller, Cat. N. Amer. PI. ed. 3. 276. 1914. 



Arctostaphylos Manzanita var. elegans L. Benson, Amer. Journ. Bot. 27: 189. 1940. 



Arborescent shrub, 1-2 mm. high, branches smooth and polished, young twigs glabrous. 



