90 NORTH AMERICAN FLORA [VorumE 29 
A shrub with glabrous twigs; leaf-blades narrowly oblong, elongate-elliptic, or oblong- 
lanceolate, 6-15 cm. long, acute or short-acuminate, sharply dentate or dentate-serrate, 
glabrous, bright-green and often shining above, pale or glaucous beneath, short-petioled; 
panicles rather closely flowered, the rachis and pedicels sparingly fine-pubescent or glabrous 
in age; calyx 6-7 mm. wide, the lobes ovate-lanceolate, acuminate, ciliolate; corolla 7-8 mm. 
long; stamens about 3 mm. long, the filaments glabrous; drupes 7-8.5 mm. in diameter. 
TYPE LOCALITY: Plants raised from seeds collected in southern Mexico by Karwinski. 
DistR1IBuTION: Southern Mexico. 
ILLustRations: Hook. Ic. Pl. pl. 29; Bot. Reg. 31: pl. 32. 
15. Comarostaphylis rupestris (Rob. & Seaton) Small. 
Arctostaphylos rupestris Rob. & Seaton, Proc. Am. Acad. 28: 112. 1893. 
A shrub with tomentulose twigs; leaf-blades oblong, rather narrowly so, to oblong-oblance- 
olate, 7-16 cm. long, acute or short-acuminate, serrulate with cartilaginous-tipped teeth, finely 
pubescent above, at least when young, tomentulose beneath, short-petioled; panicles rather 
loosely flowered, the rachis and pedicels tomentulose; calyx 4-5 mm. wide, the lobes deltoid 
to reniform, acute or sometimes abruptly pointed, ciliolate; corolla 6-7 mm. long; stamens about 
3 mm. long, the filaments villous-hirsute; drupes not seen. 
TyPE LOCALITY: Near Patzcuaro, Michoacan. 
DISTRIBUTION: Michoacan. 
16. Comarostaphylis longifolia (Benth.) Klotzsch, Linnaea 24: 
75. 1851. 
Arctostaphylos longifolia Benth. Pl. Hartw. 44. 1840. 
Comarostaphylis attenuata Klotzsch, Linnaea 24: 75. 1851. 
Arctostaphylos attenuata Hemsl. Biol. Centr. Am. Bot. 2: 278. 1881. 
A shrub with glandular-hirsute twigs; leaf-blades oblong, sometimes narrowly oblong or 
linear-oblong, or slightly oblong-lanceolate, 4-9.5 cm. long, acute or slightly acuminate, finely 
pubescent above, at least when young, tomentulose beneath, finely serrate-dentate with 
mucronate teeth, short-petioled; panicles rather closely flowered, the rachis and pedicels 
finely glandular-hirsute; calyx 4.5-5.5 mm. wide, the lobes lanceolate to ovate-lanceolate, 
acuminate, glandular-pubescent; corolla 6-7 mm. long; stamens about 3 mm. long, the fila- 
ments villous; drupes not seen. 
TyPE LocaLity: Angangueo, Michoacan. 
DISTRIBUTION: Central and southern Mexico. 
17. Comarostaphylis angustifolia Klotzsch, Linnaea 24: 74. 1851. 
Arctostaphylos angustifolia Hemsl. Biol. Centr. Am. Bot. 2: 278. 1881. 
A shrub with puberulent and finely pubescent twigs; leaf-blades narrowly oblong to 
broadly linear, 3-6 cm. long, more or less attenuate at both ends, remotely serrate, somewhat 
revolute, bright-green and glabrous above, pale and ultimately glabrous beneath except the 
midrib and veins, short-petioled; panicles loosely flowered, the rachis and pedicels glandular- 
pilose; calyx about 5 mm. wide, the lobes ovate, acute or acutish, sparingly pubescent and 
ciliolate; corolla 6-7 mm. long; stamens about 3 mm. long, the filaments villous; drupes globular, 
5~6 mm. in diameter. 
TYPE LOCALITY: Mexico. . 
Distrisution: Middle and southern Mexico. 
18. Comarostaphylis glabrata (Fernald) Small. 
Arctostaphylos glabrata Fernald, Proc. Am. Acad. 36: 497. 1901. 
A shrub with minutely pubescent or puberulent twigs; leaf-blades elliptic, 2-4 cm. 
long, acute or obtuse, entire or sharply toothed, bright-green and somewhat shining above, 
sparingly tomentulose beneath when young, glabrate in age, short-petioled; panicles closely 
flowered, the rachis and pedicels reddish-tomentulose; calyx 4-5 mm. wide, the lobes deltoid- 
