Ouratea liesner Sastre

  • Authority

    Maguire, Bassett. 1989. The Botany of the Guayana Highland- Part XIII. Mem. New York Bot. Gard. 51: 1-127.

  • Family

    Ochnaceae

  • Scientific Name

    Ouratea liesner Sastre

  • Description

    Species Description - Shrub 3-4 m tall. Leaves subcoriaceous, ovate or oblong, acute at apex, obtuse at base, 6-10 cm long, 2-5 cm wide, entire, revolute, upper surface with 7-9 primary lateral nerves, impressed, arched-ascending at 50°-60°, the intermediate nerves numerous, more slender, and subparallel, lower surface similar but nervation less prominent; petioles 10-12 mm long. Inflorescence paniculate, many-flowered, in anthesis 6-11 cm long, 4-6 cm wide, with 3-7 slender branches 1-4 cm long. Pedicels slender, 6-8 mm long in anthesis. Flower bud obtuse, 4-5 mm long. Sepals 5, oblong- lanceolate, acute, 5 mm long, 2 mm wide. Petals 5, obovate-flabelliform, 5-6 mm long, 3-3.5 mm wide. Anthers 3-3.5 mm long. Fruiting torus spherical, 3 mm diam. Drupe spherical, 5 m m diam.

    Distribution and Ecology - Riverine forest and rock outcrops along Rio Pacimoni, Territorio Federal Amazonas, southwestem Venezuela, 80-125 m.

  • Discussion

    Specimens examined: VENEZUELA, territorio federal amazonas: Dept. Rio Negro: Mamurividi, Rio Pacimoni, r32'N, 66°32'W, 125 m, 3 Apr 1884, Liesner 17174 (MO, P, VEN); Rio Pacimoni, between its mouth and junction with Rio Baria and Rio Yatua, 80 m, 23-25 Jul 1984, Davidse 27760 (MO, P, VEN).

    In the original description, Sastre states that the branches, petioles, and peduncles are "pilose." However, an examination of the isotype and paratype at M O shows the branches, petioles, and peduncles completely glabrous.