Part 1, 1914] ERICACEAE 87 
1. Comarostaphylis Hartwegiana Klotzsch, Linnaea 24: 77. 1851. 
Arctostaphylos Hartwegiana Hems\. Biol. Centr. Am. Bot. 2: 278. 1881. 
A shrub with red-hirsutulous and glandular twigs; leaf-blades linear, usually narrowly so 
on account of the strongly revolute margins, 1.5-3 cm. long, acute or abruptly pointed, entire, 
rugose and minutely pubescent above, tomentulose beneath and with longer glandular hairs 
near the base, short-petioled; panicles rather closely flowered, the rachis and pedicels densely 
glandular-hirsutulous with reddish hairs; calyx 5-6 mm. wide, the lobes ovate or deltoid-ovate, 
obtuse or acutish, tomentulose; corolla about 6 mm. long; stamens 3-3.5 mm. long, the filaments 
villous, especially at the dilated base; drupes not seen. 
TyPE Locality: Bolafios, Colotlan, Jalisco. 
Disrrigution: Colotlan. 
2. Comarostaphylis oaxacana (DC.) Klotzsch, Linnaea 24: 77. 
1851. 
Arctostaphylos oaxacana DC. Prodr. 7: 585. 1839. 
? Arctostaphylos ledifolia Mart. & Gal. Bull. Acad. Brux. 9!; 536. 1842. 
? Arctostaphylos latifolia Mart. & Gal.; Walp. Rep. 2: 726. 1843. 
? Comarostaphylis latifolia Klotzsch, Linnaea 24: 76. 1851. 
A shrub with reddish-velutinous twigs; leaf-blades narrowly oblong or linear-oblong, 
varying to slightly broadest above or below the middle, thick, 1.5-3 em. long, acute or mucro- 
nate, glabrous or with scattered hairs above, more or less densely velutinous or puberulent 
beneath, entire, short-petioled; panicles rather closely flowered, the rachis and pedicels veluti- 
nous or somewhat tomentulose; calyx 4-5 mm. wide, the lobes ovate, often broadly so, or reni- 
form-ovate, ciliolate or velutinous all over, acute or acutish; corolla 7-8 mm. long; stamens 
about 3 mm. long, the filaments villous; ovary pubescent; drupes 5-6 mm. in diameter. 
TYPE LOCALITY: Oaxaca. 
DisTRIBuTIon: Southern Mexico. 
ILLUSTRATION: Hook. Ic. Pl. pl. 27 (as Arbutus xalapensis). 
3. Comarostaphylis polifolia (H. B. K.) Zucc.; Klotzsch, Linnaea 
24:77. 1851. 
Arctostaphylos polifolia H. B. K. Nov. Gen. & Sp. 3: 277. 1819. 
A shrub with glabrous, or sparingly pubescent or puberulent twigs; leaf-blades linear, 
varying to slightly broadest above or below the middle, thick, 2-4.5 cm. long, acute or slightly 
spinescent at the apex, glabrous, at least ultimately so, and often shining above, pale and 
glabrous beneath, or with persistent scattered hairs, or puberulent, entire, revolute, short- 
petioled; panicles rather loosely flowered, the rachis and pedicels glabrous or with scattered 
hairs; calyx 5-5.5 mm. wide, the lobes ovate, usually broadly so, acute or acutish, glabrous or 
merely ciliolate; corolla 8-9 mm. long; stamens about 3 mm. long, the filaments villous; ovary 
pubescent; drupes 5-6 mm. in diameter. 
TypH LOCALITY: ‘Near Villalpando, Mexico. 
DIstTRIBUTION: Middle and southern Mexico. 
InLusTRATION: H. B. K. Nov. Gen. & Sp. pl. 258. 
4, Comarostaphylis mucronifera (DC.) Klotzsch, Linnaea 24: 76. 
1851. 
Arctostaphylos mucronifera DC. Prodr. 7: 585. 1839. 
A shrub with softly fine-pubescent twigs; leaf-blades linear-oblong or linear-oblanceolate, 
or oblanceolate, 3-7 cm. long, thinnish, abruptly or gradually prominently mucronate, glabrous 
above, at least ultimately so, and somewhat shining, more or less soft-pubescent about the 
veins beneath, entire, not revolute, short-petioled; panicles rather loosely flowered, the rachis 
and pedicels finely, usually sparingly, pubescent, and usually somewhat glandular; calyx about 
5 mm. wide, the lobes ovate, often narrowly so, acute, tomentulose; corolla 7-8 mm. long; 
stamens about 3 mm. long, the filaments villous; ovary pubescent; drupes 5-6 mm. in diameter. 
Types Locatity: Cordillera de Guachilaqua, Mexico. 
Distrisution: Middle and southern Mexico. 
