Comprehensive Description
provided by North American Flora
Covillea tridentata (DC.) Vail, Bull. Torrey Club 26 : 302. 1899
Zygophyllum tridentatum DC. Prodr. 1 : 706. 1824.
Carrea mexicana Moric. PI. Nouv. Am. 71. 1839.
Larrea tridentata Coville, Contr. U. S. Nat. Herb. 4 : 75. 1893.
A diffusely branched resinous shrub, similar in habit to the preceding; stipules reddish, ovate or lanceolate, about 3 mm. long, caducous; leaves almost sessile; leaflets broadly and obliquely ovate, 7-9 mm. long, about 5 mm. broad, 4-5-nerved, resinous, strigose or in age glabrate ; peduncles 5-8 mm. long ; sepals elliptic, silky-strigose, rounded at the apex, unequal ; petals yellow, short-clawed, about 8 mm. long, spatulate ; scales about half as long as the stamens ; filaments 6 mm. long, filiform-subulate ; fruit broadly obovoid, about 6 mm. long and 5 mm. wide, tapering below into a distinct stipe, hirsute ; hairs 1-1.5 mm. long.
Type locality : Mexico.
Distribution: Queretaro, Tamaulipas, San I.uis Potosi, and southwestern Texas.
- bibliographic citation
- John Kunkel Small, Lenda Tracy Hanks, Nathaniel Lord Britton. 1907. GERANIALES, GERANIACEAE, OXALIDACEAE, LINACEAE, ERYTHROXYLACEAE. North American flora. vol 25(1). New York Botanical Garden, New York, NY
