Taxon Details: Comarostaphylis polifolia subsp. coahuilensis Henrickson
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Narratives:
Family:
Ericaceae (Magnoliophyta)
Ericaceae (Magnoliophyta)
Scientific Name:
Comarostaphylis polifolia subsp. coahuilensis Henrickson
Comarostaphylis polifolia subsp. coahuilensis Henrickson
Primary Citation:
Madroño 28: 34. 1981
Madroño 28: 34. 1981
Common Names:
madroña, madroño
madroña, madroño
Description:
Description: Erect to spreading, low, rounded, often gnarled shrubs, 0.2-2 m tall; young twigs and petioles puberulent to hirtellous to subcanescvent, trichomes usually eglandular. Leaves conduplicately folded at matuirity or plane, 3.3-5.5 x 0.6-1.9 cm, apically obtuse to acute, but usually mucronate, lower surface subglabrous to puberulent. Inflorescences 2.5-6.2 cm long; rachis, pedicels, bracts, bracteoles, and calyx puberulent, also usually with stalked, swollen-headed glandular trichomes. Flowers: ovary glabrous or sparsely pilose. Fruit 4-6 mm in diam.
Distribution: Distribution. Endemic to Mexico, and known only from seven mountain ranges in the central Chihuahuan Desert of southern and central Coahuila, in areas of matorral xerofilo (Rzedowski, 1978) or open chaparral (Henrickson, 1981), at elevations of approximately 1500-2600 m. Flowering Apr-Aug.; fruiting Jul-Nov.
Type: Type. Mexico. Coahuila: Cañon de Calabazas in Sierra Mojada, S of La Esmeralda (nr. 27°16'N, 103°41'W), 6 May 1973 (fl), Johnston et al. 10881 (holotype, LL, photo, Diggs neg. 32; isotype, MEXU, n.v.).
Description: Erect to spreading, low, rounded, often gnarled shrubs, 0.2-2 m tall; young twigs and petioles puberulent to hirtellous to subcanescvent, trichomes usually eglandular. Leaves conduplicately folded at matuirity or plane, 3.3-5.5 x 0.6-1.9 cm, apically obtuse to acute, but usually mucronate, lower surface subglabrous to puberulent. Inflorescences 2.5-6.2 cm long; rachis, pedicels, bracts, bracteoles, and calyx puberulent, also usually with stalked, swollen-headed glandular trichomes. Flowers: ovary glabrous or sparsely pilose. Fruit 4-6 mm in diam.
Distribution: Distribution. Endemic to Mexico, and known only from seven mountain ranges in the central Chihuahuan Desert of southern and central Coahuila, in areas of matorral xerofilo (Rzedowski, 1978) or open chaparral (Henrickson, 1981), at elevations of approximately 1500-2600 m. Flowering Apr-Aug.; fruiting Jul-Nov.
Type: Type. Mexico. Coahuila: Cañon de Calabazas in Sierra Mojada, S of La Esmeralda (nr. 27°16'N, 103°41'W), 6 May 1973 (fl), Johnston et al. 10881 (holotype, LL, photo, Diggs neg. 32; isotype, MEXU, n.v.).
Flora and Monograph Treatment(s):
Comarostaphylis polifolia subsp. coahuilensis Henrickson: [Article] Luteyn, James L., et al. 1995. Ericaceae, Part II. The Superior-Ovaried Genera (Monotropoideae, Pyroloideae, Rhododendroideae, and Vaccinioideae P.P.). Fl. Neotrop. Monogr. 66: 560.
Comarostaphylis polifolia subsp. coahuilensis Henrickson: [Article] Luteyn, James L., et al. 1995. Ericaceae, Part II. The Superior-Ovaried Genera (Monotropoideae, Pyroloideae, Rhododendroideae, and Vaccinioideae P.P.). Fl. Neotrop. Monogr. 66: 560.