Mimosa rufescens Benth. var. rufescens

  • Authors

    Rupert C. Barneby

  • Authority

    Barneby, Rupert C. 1991. Sensitivae Censitae. A description of the genus Mimosa Linnaeus (Mimosaceae) in the New World. Mem. New York Bot. Gard. 65: 1-835.

  • Family

    Mimosaceae

  • Scientific Name

    Mimosa rufescens Benth. var. rufescens

  • Type

    6a. Mimosa rufescens Bentham var. rufescens. M. rufescens Bentham, 1875-1876, 11. cc.— "Habitat in Brasilia septentrionali ad Santa Anna prope Pará: Burchell n. 9344 . . . prope S. Gabriel: Spruce n. 2052; prope S. Carlos ad Rio Negro: Spruce n. 3096.. .

  • Synonyms

    Mimosa rufescens Benth., Mimosa micracantha var. plurijuga Ducke

  • Description

    Variety Description - Pinnae of larger lvs and lfts of their distal pinnae nearly always at least 4-jug., either one or the other not less than 4-jug.; terminal lfts ±1.5 4.5 cm.

    Distribution and Ecology - In open primary and disturbed forest, in forest clearings, and becoming colonial in capoeira and on roadsides, on terra firme, mostly between 100 and 500 m but in Bolivia and Sa. dos Carajás in Pará attaining 700 and in Cuzco, Peru 900 m, widespread through the Amazon Basin from inter-Andean valleys of s.-e. Colombia (Caquetá, Meta, Vaupés), Ecuador (Pastaza, Santiago-Zamora), Peru (Amazonas, San Martín, Cuzco) and Bolivia (Yungas) e. along the great river and its immediate affluents to n.-e. and s.-e. Para, thence n. through the basin of río Branco and the Guayana Highland in Venezuela and adj. Guyana to the lower Orinoco valley.-Fl. almost throughout the year, prolifically VIII-III.

  • Discussion

    Capitula of var. rufescens normally have a floral axis about 1-1.5 mm long. In part of I. L. Amaral 1040 (NY) from the Santarem-Cuyaba highway (km 1222) the flowers are spicately arranged on a receptacle to 9 mm long.

    -Pashaquilla; lanza-caspi (Peru); unha de cigano (Brazil). Map 3.

  • Distribution

    Bolivia South America| Yungas Bolivia South America| Brazil South America| Pará Brazil South America| Colombia South America| Caquetá Colombia South America| Meta Colombia South America| Vaupés Colombia South America| Ecuador South America| Pastaza Ecuador South America| Santiago-Zamora Ecuador South America| Peru South America| Amazonas Peru South America| San Martín Peru South America| Guyana South America|