Lentibulariaceae from the Viruá National Park in the northern Amazon, Roraima, Brazil Author Costa, Suzana M. Author Bittrich, Volker R. Mário de Nucci, 500, Cidade Universitária, 13083 - 290 Campinas, SP, Brazil. Author Do Amaral, Maria Do Carmo E. text Phytotaxa 2016 2016-04-26 258 1 1 25 http://dx.doi.org/10.11646/phytotaxa.258.1.1 journal article 10.11646/phytotaxa.258.1.1 1179-3163 13673170 12. Utricularia juncea Vahl (1804: 202) ( Fig. 4 : J–L) Marsh herbs, up to 30 cm tall. Stolons and vegetative parts glabrous. Leaves nearly 0.3 mm wide, filiform. Traps lateral, without appendages. Inflorescence erect, up to 10-flowered, flowers up to 1.2 cm distant from each other. Peduncle greenish, lateral spongy floats absent. Sterile bracts up to 2 mm long, basifixed, lanceolate, apex acute, equally distributed. Pedicels 2 mm long, shorter than the calyx lobes. Bract up to 1 × ca. 1 mm , basifixed, ovate, apex acute, margin entire, 1 or 3 prominent nerves. Bracteoles up to 1 × ca. 0.3 mm , basifixed, filiform, apex acute, margin entire, one prominent nerve. Calyx lobes unequal, margin entire, 7 or 8 prominent nerves, green; upper lobe 4 × 2.5 mm , lanceolate, apex acute and curved; lower lobe 3 × 2 mm , lanceolate, apex acute, bifid or trifid. Corolla yellow; upper lip 3 × 3 mm , obovate; lower lip 5 × 6 mm , orbicular, apex obscurely bilobed; spur 5 × 1 mm , cylindrical, apex acute, as long as the lower lip of corolla and forming an angle of ca. 90° with the latter in lateral view. Style and filaments short. Capsule globose to elliptic, dehiscing by a longitudinal ventral slit. Seeds numerous, ovoid, surface reticulate, testa cells tiny, elliptic to circular. Distribution :—This species occurs in North and Central America and in northern South America ( Taylor 1989 ) and tropical Africa ( Dörrstock et al. 1996 ). In Brazil U. juncea occurs in the northern and northeastern regions ( Miranda et al. 2016 ). It is found in humid savannas, marshes, lakes and pools, and frequent in shallow waters ( Taylor 1989 ). In the VNP the species grows in areas of grassy white-sand savannas with saturated soils. Taxonomic notes :— Utricularia juncea is characterized by its height of up to 30 cm , by the visible nerves on the calyx lobes and the angle formed by the spur and lower lip of the corolla (∀= 90°). Specimens :— BRAZIL . Roraima , Caracaraí , Viruá National Park : PPBio grid L1 - L2 / N2 - N3, 15 September 2010, S . M . Costa et al. 746 ( INPA !, UEC !) ; “ Estrada Perdida ”, 16 September 2010 , S . M . Costa 760, F . N . Cabral ( INPA !, UEC !) ; “ Estrada Perdida ”, 19 January 2011 , S . M . Costa et al. 826 ( INPA !, UEC !) ; PPBio grid N3 / L1 - L2 , 24 January 2011 , S . M . Costa 868, K . G . Cangani ( INPA !, UEC !) ; “ Estrada Perdida ”, 25 January 2011 , S . M . Costa 874, K . G . Cangani ( INPA !, UEC !) .