Ouratea castaneaefolia (DC.) Engl.
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Authority
Maguire, Bassett. 1989. The Botany of the Guayana Highland- Part XIII. Mem. New York Bot. Gard. 51: 1-127.
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Family
Ochnaceae
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Scientific Name
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Description
Species Description - Shrub or small tree. Leaves coriaceous, oblong, shortly acuminate at apex, rounded at base, (8-) 11-21 cm long, 9 cm wide, shining above, upper surface with the lateral nerves and tertiary veinlets impressed, the veinlets transverse, lower surface with transversely insculpted-engraved veinlets, margins sharply senate. Panicles prominent, many-flowered, 11-30 cm long, the lower axes up to 15 cm long. Sepals 5.5-6 mm long. Petals broadly orbicular, unguiculate, 6 mm long, 4.5-6 mm wide. Anthers strongly transversely rugulose. Gynophore in fruiting stage depressedsubglobose, 4-5 mm high, 7-8 mm broad. Drupe obovoid or ovoid, 9-12 mm long, 7 mm wide.
Distribution and Ecology - Southem and central Brazil north to Para, Surinam, and southem Venezuela
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Discussion
Gomphia castaneaefolia DC, Ann. Mus, Natl. Hist. Paris 17: 417,pl. 11. 1811
Specimens examined. VENEZUELA, territorio federal amazonas: Casiquiare, Vasiva, et Pacimoni, Spruce 3201 (K); Santa Barbara, at junction of Rios Ventuari and Orinoco, 21 Feb 1951, Maguire, Cowan & Wurdack 32020 (MO, N Y , P, VEN); Sierra Parima, vecinidades de Simarawochi, Rio Matacuni, 3°49'N, 64°36'W, a unos 6-7 km al oeste de la frontera Venezolana- Brasilefia, 795-830 m, 18 Apr-23 May 1972, Steyermark 107197 (NY, VEN); sabanas de Santa Barbara, 3''56'N, 67''08'W, 97 m, 14-28 Feb 1978, Huber 1731 (VEN). bolivar: Guayapo, Bajo Caura, 100 m, 12 Apr 1939, Williams 11763 (NY, VEN); Represa Guri, 30-40 km E of Ciudad Piar, 7°30'N, 63°10'W, 300-470 m, 7-8 Apr 1981, Liesner & Gonzalez 11341 (MO, VEN); 12 km NE of Santa Elena, 4*'45'N, 61*'03'W, 950 m, 1 Dec 1982, Steyermark & Liesner 127463 (MO, VEN); 17 km S of Tumeremo, 7°15'N, 61°15'W, 250 m, 4 Dec 1982, Steyermark & Liesner 127636 (MO, VEN).
The Venezuelan specimens have more numerous, generally shorter lateral axes of the inflorescence, which are more closely approximate on the rachis. In other respects the Venezuelan material appears conspecific.