Utricularia cucullata Saint-Hilaire & Girard (1838: 869)

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 : 12

6. Utricularia cucullata Saint-Hilaire & Girard (1838: 869) ( Fig. 3 : F–I)

Aquatic submersed herbs; inflorescence 2–6 cm above water surface. Stolons and vegetative parts glabrous. Leaves opposite or 3–4-whorled, divided into whorled capillary segments. Traps terminal, with a single filiform ventral appendage only, curved and with long unicellular hairs. Inflorescence erect, 1–2-flowered, <5 mm distant from each other. Peduncle greenish or pinkish, lateral spongy floats absent. Sterile bracts absent. Bract up to 1 × ca. 0.7 cm, basifixed or peltate (in this case, lower lobe ca. 1 mm long and of various shapes, but with truncate apex), apex truncate. Bracteoles absent. Pedicels ca. 1 cm long, longer than the calyx lobes. Calyx lobes equal, 1 × 1 mm, ovate to elliptic, apex rounded, margin entire, without prominent nerves. Corolla purple, pink or white, with a white and yellow mark on the lower lip and base of spur; upper lip 3 × 2 mm, ovate, apex rounded; lower lip 2–6 × 2 mm, ovate, trilobed, lateral lobes saccate, central lobe with acute apex; spur 4–7 × 1 mm, conical, apex rounded, longer than the lower lip of corolla and not forming an angle 90º with the latter in lateral view. Style and filaments short. Capsule globose, dehiscing by a ventral longitudinal slit. Seeds numerous, globose, surface reticulate with irregular projections.

Distribution:— Utricularia cucullata occurs in South America ( Taylor 1989), and in Brazil it is recorded for all regions ( Miranda et al. 2016). It grows in shallow pools in savannas ( Taylor 1989), and in the Viruá National Park is found in grassy to arboreal white-sand savannas.

Taxonomic notes:—This species is distinguishable by the terminal position of the traps on the leaf segments, by its ventral trap appendage, frequently visible to the naked eye, and the saccate lateral lobes of the lower corolla lip.

Specimens:— BRAZIL. Roraima, Caracaraí, Viruá National Park : PPBio grid L3 / N2, 13 September 2010, S. M. Costa 712, T.D. M. Barbosa ( INPA!, UEC!) ; PPBio grid L1 - L2 / N2 - N3, 15 September 2010, S. M. Costa et al. 745 ( INPA!, UEC!) ; PPBio grid, 24 January 2010, S. M. Costa 871, K. G. Cangani ( INPA!, UEC!) ; “ Estrada Perdida ”, 18 July 2010, T.D. M. Barbosa 1167, S. M. Costa ( INPA!, UEC!) ; “ Estrada Perdida ”, 20 July 2010, T.D. M. Barbosa 1221, S. M. Costa ( INPA!, UEC!) ; PPBio grid, 24 July 2010, T.D. M. Barbosa 1300, S. M. Costa ( INPA!, UEC!) ; PPBio grid, 24 July 2010, T.D. M. Barbosa 1307, S. M. Costa ( INPA!, UEC!) .

Figures

FIGURE 3. Utricularia breviscapa C.Wright ex Griseb. A. habit. Utricularia chiribiquetensis Fernandez-Pérez—B. flower and fruit enclosed by the calyx (lateral view); C. trap. Utricularia costata P.Taylor—D. habit. E. flower (view from the top). Utricularia cucculata A.St.-Hil. & Girard—F. habit. G–H. flower (front view of purple and white and pale-pink variants), I. flower (lateral view). Utricularia foliosa L.—J. flower (front view). K. flower (front view, reproductive parts evident). L. fruits.