100 NORTH AMERICAN FLORA [VoLUME 29 
rounded, obtuse, or acutish and mucronate at the apex, obtuse or cordate at the base, 25-40 
mm. long, firm-coriaceous, pale grayish-green, scabrous, more or less glandular-villous at the 
base and on the margins, the midvein prominent; petioles glandular-villous; bracts mem- 
branous, deciduous, pinkish, 5-6 mm. long, glandular-villous; pedicels very slender, 10-15 
mm. long, glandular-villous; calyx-lobes glandular-villous, lanceolate, 3 mm. long; corolla 
7-8 mm. long; fruit glandular-pubescent, ovoid; nutlets united into an ellipsoid stone, cari- 
nately ribbed and rugose in the intervals, sharply pointed at both ends. 
TYPE LOCALITY: Cuyamaca Mountains, San Diego County, California. 
DIstTRIBUTION: Coniferous forest belt, from the San Bernardino Mountains, California, to 
northern Lower California. 
21. Uva-ursi pumila (Nutt.) Abrams. 
Arctostaphylos pumila Nutt. Trans. Am. Phil. Soc. II. 8: 267. 1843. 
Daphnidostaphylis pumila Klotzsch, Linnaea 24: 267. 1851. 
A low spreading shrub forming mats, with assurgent branches, reddish-brown exfoliating 
bark, and slightly glandular branchlets canescent with a fine soft tomentum; leaves numerous, 
the blades narrowly obovate to spatulate, rarely elliptic or ovate, 1-2 em. long, rounded to 
acute and inconspicuously mucronate at the apex, acute or sometimes obtuse at the base, 
dull-green above, distinctly paler beneath, tomentose when young or often permanently so on 
the lower surface; petioles 2-3 mm. long; flowers in short congested simple or few-branched 
racemes with tomentose peduncles and bracts, the latter lanceolate-acuminate, 2-4 mm. 
long, firm and persistent; pedicels 3 mm. long, slender, more or less glandular-pubescent; calyx- 
lobes broadly ovate, ciliate on the margins; corolla pink, 4 mm. long; ovary pubescent; fruit 
light-brown, nearly glabrous, slightly depressed-globose; nutlets readily separable or rarely 
irregularly coalescent, carinate, otherwise smooth. 
TYPE LOCALITY: Monterey, California. 
DISTRIBUTION: Confined to the Monterey peninsula, California. 
22. Uva-ursi nummularia (A. Gray) Abrams. 
Arctostaphylos nummularia A, Gray, Proc. Am. Acad. 7: 366. 1868. 
A low erect shrub, 5-15 dm. high, with numerous and very leafy branches, dark reddish- 
brown exfoliating bark, and glandular-pubescent and more or less setose-hispid branchlets; 
leaf-blades nearly orbicular to obovate or oblong-lanceolate, entire or rarely irregularly serrate, 
acutish to rounded and mucronate at the apex, acute to shallowly cordate at the base, 7-20 
mm. long, thin, dark-green and shining above, paler beneath, cartilaginous and revolute on 
the margins, glabrous or the midvein puberulent toward the base, and the margins sometimes 
sparsely setose-hispid; petioles 3-4 mm. long, glandular-pubescent and setose-hispid; flowers in 
short terminal panicles or racemes; bracts triangular at the base, abruptly tapering into a 
subulate more or less deciduous apex, 2-3 mm. long; pedicels slender, 5 mm. long in flower, 
glabrous; calyx-lobes ovate, 3 mm. long, ciliate or glabrous on the margins; corolla 5 mm. long 
or less; ovary densely pubescent; fruit deep-brown, nearly or quite smooth, oblong, flattened 
laterally, 4-6 mm. long; pericarp thin with very little dry granular pulp; nutlets 2-4, readily 
separable, thin-walled. 
Type LocaLiry: On the plains near Mendocino City, California. 
DIstRIBUTION: Coast ranges of California, from Mendocino County to Monterey County. 
23. Uva-ursi myrtifolia (Parry) Abrams. 
Arctostaphylos myrtifolia Parry, Pittonia 1: 34. 1887. 
An erect shrub, branching from the base, 3-10 dm. high, with smooth dark reddish- 
brown bark and setose-hispid branchlets; leaf-blades ovate to narrowly elliptic, 1-2 cm. long, 
obtuse or commonly acute and prominently cuspidate at the apex, firm-coriaceous, bright- 
green and glabrous on both surfaces or ciliate when young, the margins not revolute, promi- 
nently reticulate-veined; flowers in short simple or few-branched racemes; rachis glandular- 
pubescent; bracts lanceolate, 2 mm. long, persistent, spreading or reflexed; pedicels glabrous, 
2-3 mm. long, with prominent and persistent scarious bracteoles at the base; calyx-lobes 
