Monographs Details: Duckea flava (Link) Maguire
Authority: Maguire, Bassett & Wurdack, John J. 1958. The botany of the Guayana Highland--Part III. Mem. New York Bot. Gard. 10: 1-156.
Family:Rapateaceae
Description:Distribution and Ecology - Specimens examined: BRAZIL: flores pallide flavi, super eataraetas ad ripas arenosis, Rio Curicurary (am. Rio Negro), Amazonas, Nov 2.3, 1936, A. Vurte 35593 (RB, P, S, G, NY, US.) VENEZUELA: Temi, Yavita, Amazonas, alt, 128 m, Jan 30, 1942, L. Williams 14087 (F, US, YEN) ; Maipure, Humboldt 4' Bonpland 1094 (holotype B) ; locally common, perennial herb 3-4 m high, in thickets of recently flooded small bamboo and palm, on white sand, Rio Temi, Rio Atabapo, 1/2 hour below Yavita, Oct 19, 1950, Maguire 20321; occasional, flowers yellow, at length whitish, thickets, eaatinga, Savanna III at base of Cerro Yapacana, 175 m alt., Dec 31, 1951, Maguire, Cowan & Wurdart 30487; Yapacana Savanna I, Jan 7, 1951, Maguire, Cowan & Wurdart 30800; flowers yellow, thickets, lagoona, Cano Yapacana, occasional, 125 in alt., March 16, 1953, Maguire & Wurdart 34492; Cano Pimiehin, at 125-135 m alt., April 14, 1953, Maguire & Wurdart 35630; clumped perennial herb near water's dege, occasional, edge of laja, 50 km above mouth of Rio Pacimoni, at 120 m alt., Nov 27, 1953, Maguire, Wurdart & Bunting 36643; flowers yellow, frequent, savannas on right bank of Rio Pacimoni, 50 km above mouth at 120 m alt., Feb 7, 1954, Maguire, Wurdart & Bunting 37598; flowers yellow, locally frequent, Cano Hechimoni, 8 km above mouth, Rio Siapa, at 120 m alt., Feb 9, 1954, Maguire, Wurdack & Bunting 37662.

Discussion:

Schoenus flavus Link, Jahrb. 3: 75. 1820.

Bapatea? flava (Link) Kunth, Enum. PI. 3: 367. 1841.

Monotrema flavum (Link) Kornicke, Linnaea 37: 478. 1874.

Type: Maipure, Venezuela, Humboldt 1094 (B).

Duckea flava has no more in common with Monotrema than D. squarrosa and D. cyperaceoidea have with the tightly knit genus Cephalostemon. As assembled here, the genus is possibly less homogeneous than is characteristic of genera in the Rapateaceae, yet the four species are held together quite satisfactorily by similarity of anthers and seed.

Distribution:Brazil South America| Venezuela South America|