Monographs Details: Mapania macrophylla H.Pfeiff.
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 - Large sedge in forest swamp in northeastern tropical South America from eastern Bolivar of Venezuela through the Guianas south-eastwards to Amapa State of Brazil; one isolated station in Santo Domingo. VENEZUELA. Bolivar: Sierra de Lema, Rio Chicanan, 80 km SE of El Dorado, alt 500 m, Steyermark 89528; Alto Rio Cuyuni, summit of north portion of Cerro Uroi, Rio Uroi, alt 700 m, Maguire, Steyermark & Maguire 53784; 10-15 km below Cerro Escalera, Rio Uiri-yuk, frequent herb in swampy forest, alt 100 m, Maguire, Steyermark & Maguire 46778; Rio Uiri-yuk, rare in montane forest between base of La Escalera and Base Camp, alt 150-550 m, Maguire, Steyermark & Maguire 46944. BRITISH GUIANA. Tukeit, Amatuk Portage, occasional along stream, Maguire & Fanshawe 23545; Pakaraima Mts., Membaru-Kurupung Trail, locally frequent in Kauta-Kakarall forest on laterite type soil, Maguire & Fanshawe 32358; Demerara River, Jenman 6903 (syntype of M. schomburgkii in K); Essequibo River, Moraballi Creek, near Bartica, near sea level, Sandwith 77 (K);Ayanganna Plateau, locally frequent on shaded hillside and in moist lower places, Pong River, Dicymbe forest on laterite, trail to Ayanganna, Tillett & Tillett 44932. SURINAME. Brokopondo District, between Paranam and Afo-baka by creek in dense seasonal forest, Kramer & Hekking 2824. BRAZIL. Amapa: Rio Oiapoque, forest swamp, wet clay soil, immediately east of Colonia Agricola do Oiapoque, about 4 km N of mouth of Cricu River, Irwin, Egler & Westra 47525.

Discussion:

Hypolytrum macrophyllum Bockeler, Flora 61: 142. 1878. Mapania schomburgkii C. B. Clarke, Kew Bull. Add. Ser. 8 : 54. 1908. Excl. Jenman 972; nomen superfluum.

Type. In montosis ins. St. Domingo ad ripas flumin., Mayerhoff (B).

Distribution:Venezuela South America| Guyana South America| Brazil South America|