Utricularia hispida Lamarck (1791: 50)

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 : 15

10. Utricularia hispida Lamarck (1791: 50) ( Fig. 4 : D–G)

Marsh herbs, up to 60 cm tall. Stolons and vegetative parts glabrous. Leaves up to 0.3 mm wide, linear to oblanceolate, apex rounded. Traps lateral, dorso-lateral appendages deltoid and compressed. Inflorescence erect, up to 10-flowered, flowers 0.5–3 cm distant from each other. Peduncle greenish or blackish; lateral spongy floats absent. Sterile bracts up to 1 × ca. 1 mm, basifixed, oblong, apex truncate, equally distributed. Bract up to 2 × ca. 2 mm, basifixed, oblong, apex irregularly denticulate. Bracteoles 1–1.5 mm long, basifixed, filiform. Pedicels nearly 7 mm, longer or equal to the calyx lobes. Calyx lobes equal, 3 × 2 mm, triangular, margin sinuous to irregularly denticulate, without prominent nerves, green, dark red to purple. Corolla pale violet with white and yellow-orange mark on the lower lip; upper lip 5 × 3–4 mm, ovate, apex rounded; lower lip 6 × ca. 8 mm, lacking noticeable lobes; spur ca. 7 × ca. 1 mm, conical, apex acute, longer than the lower lip of corolla and not forming an angle of 90º with the latter in a lateral view. Style and filaments short. Capsule globose, dehiscing by a longitudinal ventral slit. Seeds numerous, ovoid to oblique-ovoid, surface reticulate, testa cells oblong, elliptic or circular.

Distribution:— Utricularia hispida occurs in North ( Mexico), Central and South America ( Taylor 1989). In Brazil it is recorded in the northern, northeastern, central-western and southeastern regions ( Miranda et al. 2016). This species is found in saturated savannas, usually among Poaceae and Cyperaceae , open savannas or in sandy humid soils between rocks ( Taylor 1989). In the VNP it occurs in areas of grassy white-sand savannas, generally as isolated individuals among grasses, up to 60 cm tall.

Taxonomic notes:— Utricularia hispida is distinguishable by its bract and bracteoles with irregularly denticulate margin and the oblong to lanceolate, well-developed lamina (up to 30 cm long).

Specimens:— BRAZIL. Roraima, Caracaraí, Viruá National Park: PPBio grid N3 / L1 - L2 , Viruá National Park : 24 January 2011, S. M. Costa 869, K. G. Cangani ( INPA!, UEC!) ; “ Mata do Seu Nerí ”, 26 January 2011, S. M. Costa 901, K. G. Cangani ( INPA!, UEC!) .

Figures

FIGURE 4. Utricularia gibba L. A. habit. Utricularia guyanensis A.DC.—B. inflorescence (detail). C. flower (lateral view, white line— position of stamens). Utricularia hispida Lam.—D–F. flower (front, posterior and lateral views).G. immature fruit. Utricularia hydrocarpa Vahl—H. inflorescence. I. flower (front view). Utricularia juncea Vahl—J. leaves. K. inflorescence (detail). L. flower (lateral view).