Comarostaphylis glaucescens (Kunth) Zuccarini ex Klotzsch

Comarostaphylis glaucescens (H. B. K.) Zucc; Klotzsch,
Linnaea 24: 76. 1851.
Arctostaphylos glaucescens H, B. K. Nov. Gen. & Sp. 3: 278. 1819.
A shrub with puberulent twigs; leaf -blades oblong-lanceolate, 10 cm. long or less, somewhat mucronate, thickish, entire, glabrous and shining above, somewhat reticulate, pubescent and glaucous beneath, short-petioled; panicle closely flowered, the rachis and pedicels puberulent ; calyx purple, the lobes orbicular-ovate, acute, glandular-ciliate ; corolla glabrous ; stamens one half as long as the corolla, the filaments glabrous; ovary pubescent; drupe depressedglobose.*
Type locality: Between Guanajuato and Valenciana, Guanajuato. Distribution: Known only from the type locality.

Comarostaphylis mucronifera (DC.) Klotzsch, Linnaea 24: 76
1851.
Arctoslapkylos 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.
TypB locality: Cordillera de Guachilaqua, Mexico. Distribution: Middle and southern Mexico.