Utricularia gibba L.

Distribution

Biogeografic region: Amazonia, Andean, Caribbean, Orinoquia, Pacific. Elevation range: 20–3850 m a.s.l. Native to Colombia. Colombian departments: Amazonas, Antioquia, Bogotá DC, Boyacá, Cauca, Cesar, Chocó, Cundinamarca, Meta, Santander.

Habit

Herb, Aquatic.

Conservation

IUCN Red List Assessment (2021): LC. National Red List of Colombia (2021): Potential LC.

Lentibulariaceae, P. Taylor. Flora Zambesiaca 8:3. 1988

Morphology General Habit

Aquatic or subaquatic herb.

Vegetative Multiplication Stolons

Stolons usually up to more or less 10, fasciculate at the base of the peduncle, filiform, terete, up to 20 cm.×1 mm., sometimes slightly inflated.

Morphology General Rhizoids

Rhizoids few from the base of the peduncle, often absent, filiform.

Morphology Leaves

Leaves numerous, alternate on the stolons, up to 20 mm. long; segments capillary, glabrous or sparsely setulose, simple or usually dichotomously forked from or near the base, each segment sometimes again 1–3 or rarely more times forked.

Morphology General Traps

Traps usually numerous, replacing one of the leaf segments at a fork, ovoid, 1–1.5 mm. long, stalked; mouth lateral, with 2 dorsal, long, usually copiously branched hairs and a few ventral shorter simple hairs.

Morphology Reproductive morphology Inflorescences

Inflorescence erect, 2–35 cm. high, solitary or often several arising in succession from the fascicle of stolons; flowers (1)2(6); peduncle straight, smooth and glabrous; scales absent or more usually 1 at or above the middle of the peduncle, similar to the bracts; bracts basifixed, semi-circular, semi-amplexicaul, more or less 1 mm. long; bracteoles absent; pedicels filiform, erect, (2)6–12(30) mm. long.

Morphology Reproductive morphology Flowers Calyx

Calyx lobes subequal, circular to broadly ovate, 1–3 mm. long.

Morphology Reproductive morphology Flowers Corolla

Corolla yellow, often with brown or reddish nerves, 4–25 mm. long; superior lip circular, 2–3 times as long as the upper calyx lobe, usually shallowly and obscurely 3-lobed; inferior lip usually shorter and narrower than the superior, circular, usually entire, rarely emarginate; palate much raised and bigibbous; spur conical to narrowly cylindrical, shorter than to almost twice as long as the inferior lip, the apex usually bearing a few shortly stalked glands.

Morphology Reproductive morphology Flowers Androecium Stamens

Filaments linear; anther-thecae more or less confluent.

Morphology Reproductive morphology Flowers Gynoecium Pistil

Ovary globose; style short but distinct; stigma inferior lip semi-circular, superior short, more or less obsolete.

Morphology Reproductive morphology Fruits

Capsule globose, 2–4 mm. in diam., dehiscing into 2 lateral valves.

Morphology Reproductive morphology Seeds

Seeds rather few (more or less 20–40), imbricate on the smooth placenta, lenticular with a broad irregular wing, 1–1.6 mm. in total diam., distal surface smooth to verrucose; hilum prominent; testa-cells small, irregular, indistinct.

Lentibulariaceae, P. Taylor. Flora of Tropical East Africa. 1973

Morphology General Habit

Aquatic or subaquatic herb.

Vegetative Multiplication Stolons

Stolons usually up to ± 10, fasciculate at the base of the scape, filiform, terete, up to 20 cm. long or more, sometimes slightly inflated, up to 1 mm. thick.

Morphology General Rhizoids

Rhizoids few from the base of the scape, often absent, filiform.

Morphology Leaves

Leaves numerous, alternate on the stolons, up to 20 mm. long; segments capillary, glabrous, simple or usually dichotomously forked from or near the base, each segment sometimes again 1–3 or rarely more times forked.

Morphology General Traps

Traps usually numerous, replacing one of the leaf-segments at a fork, ovoid, 1–1.5 mm. long, stalked; mouth lateral; upper lip with 2 long usually copiously branched hairs; lower lip usually with a few shorter simple hairs.

Morphology Reproductive morphology Inflorescences

Inflorescence erect, 2–35 cm. high, solitary or often several arising in succession from the fascicle of stolons; flowers (1–)2(–6); scape straight, smooth and glabrous; scales absent or more usually 1 at or above the middle of the scape, similar to the bracts; bracts basifixed, semi-orbicular, semi-amplexicaul, ± 1 mm. long; bracteoles absent; pedicels filiform, erect, (2–)6–12(–30) mm. long.

Morphology Reproductive morphology Flowers Calyx

Calyx-lobes subequal, orbicular to broadly ovate, 1–3 mm. long.

Morphology Reproductive morphology Flowers Corolla

Corolla yellow, often with brown or reddish nerves, 4–25 mm. long; upper lip orbicular, 2–3 times as long as the upper calyx-lobe, usually shallowly and obscurely 3-lobed; lower lip usually shorter and narrower than the upper, orbicular, usually entire, rarely emarginate; palate much raised and bigibbous; spur conical to narrowly cylindrical, shorter than to almost twice as long as the lower lip, apex usually bearing a few shortly stalked glands.

Morphology Reproductive morphology Flowers Androecium Stamens

Filaments linear; anther-thecae ± confluent.

Morphology Reproductive morphology Flowers Gynoecium Pistil

Ovary globose; style short but distinct; stigma lower lip semi-orbicular, upper short, ± obsolete.

Morphology Reproductive morphology Fruits

Capsule globose, 2–4 mm. in diameter, dehiscing into 2 lateral valves.

Morphology Reproductive morphology Seeds

Seeds rather few (± 20–40), imbricate on the smooth placenta, lenticular with a broad irregular wing, 1–1.6 mm. in total diameter, outer surface smooth to verrucose; hilum prominent; testa-cells small, irregular, indistinct.

Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

Distribution

Nativa en Colombia; Alt. 2700 m.; Andes.

Morphology General Habit

Hierba

Conservation

No Evaluada