Monographs Details: Calyptrocarya bicolor (H.Pfeiff.) T.Koyama
Authority: Maguire, Bassett. 1967. The botany of the Guayana Highland--Part VII. Mem. New York Bot. Gard. 17: 1-439.
Family:Cyperaceae
Description:Distribution and Ecology - Relatively widely distributed as undergrowth of forests in tropical South America from Amazonian Peru throughout Guayana and the Guianas eastwards to northern Brazil. PERU. Loreto: Mishuyacu, near Iquitos. dense forest. Krug 377 (holotype of f grandifolia F. isotype XY). Killip & A. C. Smith 29992; lower Rio Huallaga, Williams 4378; San Martin, in jungle in deep ravine on ridge, E of Tingo Maria, alt 625-1100 m. Allard 21-587. COLOMBLIA Vaupes: Yurupari, P H. Allen 3281 (US, VENEZUELA. Amazonas: Cerro de la Xeblina. Rio Yatua, rainforest, alt 140 m. Maguire et al 36792; Bolivar: Guai-quinima. low Clusia woodland on white sand above the First Escarpment. Maguire 32740: Alto Rio Paragua. NE of Serrania Pia-soi. alt 650-800 m, Steyermark 90696 (US. VEX): Region de Uriman, Rio Chizca. affluent of Caroni, alt 550 m, Bernardi 740; Region de los rios Icabaru y Hacha, alt 450-S50 m, Bernardi 2734; Chimanta Massif, Abacapa-tepui, along Rio Abacapa. alt 420 m. Steyermark 74775. BRITISH GUIAXA. Mt. Russell District. Jenman 2100 (K): Anarica Waterfall, Stockdale S776 (K); Assapatta. N.W. District. De La Cruz 4318; Pomeroon District, Moruka River, De La Cruz 4333: Waini River, Macaw Falls, Beckett 8520 (K): Matthews Ridge, Barima River, alt 500 ft. Maguire 40503. SURINAME. Zanderij Is.. Maguire &Stahel 28703: Zuid River, ca 2 km above confluence with Lucie River, alt 220-240 m, Irwin et al 55065; West River, 14.5 km N of Lucie River, Maguire 54289. FRENCH GUIANA. Opposite Colonia Agricola do Oiapoque, about 4 km N of mouth of Cricu River, Irwin & Westra 41480. BRAZIL. Amazonas: Prov. San Carlos, ad Rio Negro, Spruce 3040; Para: Belem, Baldwin, Jr 4538; Sao Francisco, Goergi in 1914; Amapa: Rio Amapari, common along Estrada Nova, alt ca 150 m, Cowan 38290; Serra do Navio, Rio Amapari, frequent along trail to Rio Araguary, alt 70-300 m, Maguire & Cowan 38126; Rio Araguari, Pires et al 51441

Discussion:

Becquerelia bicolor H. Pfeiffer, Repert. Sp. Nov. 18: 381. 1922. With description, based on Calyptrocarya bicolor Xees. Linnaea 9: 304. 1S34. Xomen nudum.

Calyptrocarya poeppigiana sensu Nees. Fl. Brasil. 2(1): 194. t. 28. 1S42; Steudel, Syn. Pl. Glumac. 2: 181. 1855; Bockeler, Linnaea 38: 432. 1S74; all at least in major part.

Becquerelia bicolor H. Pfeiffer formae typica. ramosissima et verticillata H. Pfeiffer, Repert. Sp. Nov. 18: 381. 1922.

Calyptrocarya poeppigiana ‘Kunth f gramolifolia R. Gross ex Macbride. Field. Mus. Publ. Bot. 11: 41. 1931. Syn nov

Type. Guyane frangaise [French Guiana] Poiteau (reported to be in P).

Distribution:Peru South America| Guyana South America| French Guiana South America| Brazil South America|