Genlisea filiformis Saint-Hilaire (1833: 430–431)

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

1. Genlisea filiformis Saint-Hilaire (1833: 430–431) ( Fig. 2 : A–B)

Marsh herbs, up to 20 cm tall. Leaves spathulate,> 0–2 × ca. 0.3 cm. Raceme 1–5-flowered, flowers up to 2.5 cm distant from each other. Peduncle glabrous or with few glandular hairs. Sterile bracts evenly distributed. Sterile bracts, bract and bracteoles basifixed, lanceolate, up to 1.5 mm long, glabrous. Pedicels up to 7 mm long, with glandular hairs. Calyx lobes ovate to elliptic, apex acute, up to 2 mm long, with few simple hairs on the margin. Corolla yellow; upper lip ovate; spur saccate, apex obtuse, glandular hairs present or absent. Capsule globose, with simple hairs, dehiscence circumscissile.

Distribution:— Genlisea filiformis is distributed from North America ( Mexico) to South America ( Taylor 1991, 1999, Fleischmann 2012a). In Brazil it occurs in all regions except the southern region ( Miranda et al. 2016), and is found in grassy white-sand savannas in VNP.

Taxonomic notes:—This species is distinguishable from other species with small yellow flowers by its saccate spur with obtuse apex and by the presence of sparse glandular hairs.

Specimens:— BRAZIL. Roraima, Caracaraí, Viruá National Park : PPBio grid L3 / N2, 13 September 2010, S. M. Costa 715b, T.D. M. Barbosa ( INPA!, UEC!) ; PPBio grid, 24 June 2010, T.D. M. Barbosa 1310, S. M. Costa ( INPA!, 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).