Monographs Details: Calliandra trinervia var. peruicola Barneby
Authors:Rupert C. Barneby
Authority: Barneby, Rupert C. 1998. Silk tree, guanacaste, monkey's earring: A generic system for the synandrous Mimosaceae of the Americas. Part III. Calliandra. Mem. New York Bot. Gard. 74: 1-223.
Description:Variety Description - Arborescent to 4-5 m, with weakly geotropic branches, in aspect and inflorescence closely resembling var. arborea; distal pair of lfts elliptic-acuminate 5.5-7 x 2-3 cm. Calyx of peripheral fls ±2.4 x 1.1 cm, striate, glabrous; corolla ±6.6 mm, glabrous, thinly papillate; androecium 14-merous, the tube ±7 mm, the filaments uniformly red. Pods 7-9.5 x 1-1.3 cm, the dilated sutures setulose, the valves densely subhorizontally venulose.

Distribution and Ecology - In moist quebrada bottoms, 600-800 m, known only from the type-locality near 3°40'S, 80°20'W, in the Peruvian department of Tumbes. — Map 31. — Fl. XI-XII(-?).

Relationships - The one known locality of var. peruicola is remote from other varieties of C. trinervia, but the plant has no substantial differential characters other than the papillate corolla (which occurs in some populations of Central American var. arborea), the pilosulous sutures of the pod, and the dense horizontal venulation of its valves. The dark red corolla and androecium recall Colombian var. carbonaria.

Distribution:Tumbes Peru South America|