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FOC | Family List | FOC Vol. 19 | Lentibulariaceae | Utricularia

16. Utricularia salwinensis Handel-Mazzetti, Symb. Sin. 7: 873. 1936.

怒江挖耳草 nu jiang wa er cao

Probably perennials, terrestrial or lithophytic. Rhizoids capillary, simple. Stolons capillary, branched. Traps on rhizoids and stolons, stalked, ovoid, ca. 1 mm, mouth lateral; appendage 1, dorsal, flabellate, fringed with multicellular stipitate glands. Leaves few, from peduncle base and stolons, long petiolate, glabrous; leaf blade obovate to orbicular, 2-12 × 1-2 mm, membranous, veins dichotomously branched, base attenuate, margin entire, apex rounded. Inflorescences erect, 3-7 mm, 1-flowered, glabrous; peduncle terete, 0.2-0.4 mm thick; scales absent; bracts basisolute, oblong, ca. 1.5 mm, base truncate, margin 2-cleft or erose, apex acute to truncate. Pedicel erect, spreading, or ± recurved, 2-10 mm; bracteoles basisolute, similar to bracts. Calyx lower lobe oblong, much smaller than upper lobe, apex emarginate; upper lobe suborbicular, ca. 2 mm, apex emarginate. Corolla white or pale pink, with a yellow spot at base of lower lip; lower lip 3-lobed, middle lobe much larger than lateral lobes, apex rounded; spur narrowly cylindric, ca. 2 × as long as upper calyx lobe, apex obtuse; palate with a slightly raised rim, fringed with moniliform hairs; upper lip subquadrate, much shorter than upper calyx lobe, apex emarginate. Filaments 0.5-0.7 mm, curved; anther thecae ± distinct. Ovary globose; style very short; stigma lower lip circular, upper lip obsolete. Capsule and seeds not seen. Fl. Jul-Aug.

● Among moss on wet cliffs and in bogs; 3200-4000 m. SE Xizang, NW Yunnan.

Utricularia salwinensis had been reported from the mountains of N Sumatra in Indonesia (P. Taylor, Fl. Malesiana, ser. 1, 8(2): 292. 1977). However, the Sumatran plants were later described as U. steenisii P. Taylor.


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