Monographs Details: Ouratea sagotii (Tiegh.) R.S.Cowan
Authority: Maguire, Bassett. 1989. The Botany of the Guayana Highland- Part XIII. Mem. New York Bot. Gard. XIII: 1-127.
Description:Species Description - Tree. Leaves coriaceous, strongly revolute, elliptic- or ovate-oblong to elliptic-lanceolate acute, obtuse, or rounded at apex, rounded or obtuse to subacute at base, 8-26 c m long, 4-10.5 cm wide, 2.5-2.8 times longer than broad, upper surface with subimpressed primary lateral and intermediate nerves, the tertiary venation usually suppressed or only faintly evident, lower surface manifestly nerved, the primary lateral and intermediate nerves prominent, the tertiary veinlets conspicuously transversely impressed or elevated to form a subparallel, elongated, and subhorizontal pattem; petioles 3-10 m m long. Inflorescence paniculaXQ, 6-19(-26) c m long, 5- 10(-15) c m wide with 2-4(-5) spreading axes 3- 10(-14) c m long. Flowers solitary or crowded in short fascicles of 2 or 3; pedicels 5-7(-10) m m long. Sepals ligulate-oblong, obtuse, 7-9 m m long, 2.5-3 m m wide. Petals broadly obovate, rounded at apex, basaUy shortly unguiculate, 10-12 m m long, 7 m m wide. Anthers 7-8 m m long, strongly

Distribution and Ecology - Guianas and northeastem Venezuela (Territorio Federal Delta Amacuro and eastem Estado Bolivar).


Ouratea sagotii (van Tieghem) Cowan, Brittonia 8(4): 283. 1957, nom. superfl.

Hostmannia sagotii van Tieghem, Ann. Sci. Nat. Bot. VIII 16: 414. 1902.

Camptouratea sagotii van Tieghem, Ann. Sci. Nat. Bot. VIII 16: 211, 1902.

Specimens examined. VENEZUELA. Without locality, 13 Jun 1942, Williams 15858 (NY), bolivar: Altiplanicie de Nuria, 50 km N E de Guasipati, 6 Jul 1960, Little 17602 (NY, VEN); altiplanicie de Nuria, woods along trail between end of savanna east of Hato de Nuria and Quebrada Agua Linda, 18 Jul 1960, Steyermark 86454 (NY, VEN); along Rio Reforma 0,25- 1 km above junction with Rio Toro, 11 Dec 1960, Steyermark 87920 (NY, VEN); between camp and Agua Linda, 7 km E of Hato de Nuria, E of Miamo Altiplanicie de Nuria, 16 Jan 1961, Steyermark 88446 (NY, VEN); campamento La Quebrada, Reserva Forestal de "Imataca," 21-29 Jun 1964, Marcano Berti 235 (MER, NY, VEN); campamentos "El Paraiso" y "La Yagua," a 48 km N E del Caserio Los Rosos este ultimo a 17 km de Upata, Jun 1966, C. Blanco 525 (NY, VEN), TERRITORIO FEDERAL DELTA AMACURO: EstC de Rio Grande, Este-Noreste de El Palmar, cerca de los limites del Estado Bolivar, 28 May 1964, Marcano Berti 219 (MER).

contrasted with that of O. roraimae Engl., the toms of O. sagotii is enlarged and sphaeroidal, whereas that of O. roraimae is longer than broad as in O. surinamensis (Planchon) Wehlb., although not as elongated as in that species. Moreover, in O. roraimae the leaf blade is 1.5- 2 times longer than broad, whereas in O. sagotii it is 2.5-2.8 times.