Genlisea oxycentron Taylor (1954: 288)

Costa, Suzana M., Bittrich, Volker & Do Amaral, Maria Do Carmo E., 2016, Lentibulariaceae from the Viruá National Park in the northern Amazon, Roraima, Brazil, Phytotaxa 258 (1), pp. 1-25 : 5

2. Genlisea oxycentron Taylor (1954: 288) ( Fig. 2 : C–D)

Marsh herbs, up to 7 cm tall. Leaves spathulate, ca. 1.5 × ca. 0.15 cm. Raceme 1–3-flowered, flowers up to 1 cm distant from each other. Peduncle densely covered by simple and glandular hairs. Sterile bracts, bract and bracteoles basifixed, lanceolate, up to 1 mm long; margin and surface with simple hairs. Pedicels up to 1.5 mm long, simple hairs present. Calyx lobes lanceolate, apex acute, 1 mm long, margins and external surface with simple hairs. Corolla yellow; superior lip ovate; spur conical, apex acute, sparse glandular hairs present. Capsule globose, simple hairs present, dehiscence circumscissile.

Distribution:—This is the first record of Genlisea oxycentron for Roraima. This species occurs in Trinidad, Venezuela, Guyana and Brazil ( Fleischmann 2012a), where it is also found in the states of Pará, Tocantins and Maranhão ( Miranda et al. 2016). In VNP it occurs in areas of grassy white-sand savanna.

Taxonomic notes:—It differs by its conspicuous conical spur with acute apex.

Specimens:— BRAZIL. Roraima, Caracaraí, Viruá National Park: PPBio grid L3/ N2, 13 September 2010, S.M. Costa 715a, T.D.M. Barbosa (UEC!).

Figures

FIGURE 2. Genlisea filiformis A.St.-Hil. A. leaves in rosette. B. flower (front view). Genlisea oxycentron P.Taylor—C. leaves. D. flower (lateral view). Genlisea pygmea A.St.-Hil.—E. leaves in rosette. F. flower (front view). Utricularia amethystina Salzm. ex A.St.-Hil. & Girard—G. leaves. H. the white-flowered variant (lateral view). I. the blue-flowered variant (front view); Utricularia benjaminiana Oliv. J. spongy floats. K. habit. L. inflorescence (detail, note the botuliform spur).