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Chinese Plant Names | Family List | Lentibulariaceae | Utricularia

Utricularia punctata Wall. ex A. DC.


Description from Flora of China

Utricularia fluitans Ridley.

Perennials, freely suspended aquatic. Rhizoids apparently absent. Stolons filiform, branched. Traps on leaves, shortly stalked, broadly obliquely ovoid, 1-2 mm, mouth lateral; appendages 2, dorsal, branched, setiform, with simple shorter setae. Leaves numerous on stolons, 2-6 cm, divided from near base into 2 or 3 primary segments; segments elliptic in outline, dichotomously divided into numerous further segments; ultimate segments capillary, terete, sparsely minutely setulose. Inflorescences erect, 6-20 cm, 5-10-flowered; peduncle terete, 0.6-1 mm thick, glabrous; scales few, similar to bracts; bracts basisolute, ovate, 2-2.5 mm, glandular. Pedicel erect, 3-10 mm, filiform, slightly dorsiventrally compressed; bracteoles absent. Calyx lobes orbicular, convex, 1-1.8 mm; lower lobe slightly smaller, apex truncate to retuse; upper lobe apex rounded. Corolla lilac, violet, or white, with a yellow blotch at base of lower lip, 6-10 mm; lower lip transversely oblong-elliptic to subreniform, base with prominent 2-lobed swelling, apex rounded to retuse; spur narrowly conic, ± as long as and parallel with lower lip, slightly curved, apex truncate to emarginate; palate margin glabrous; upper lip transversely elliptic, cucullate, apex rounded. Filaments ca. 1.5 mm, curved; anther thecae confluent. Ovary broadly ovoid; style evident, glandular; stigma lower lip transversely elliptic, upper lip semicircular to deltoid. Capsule ellipsoid, ca. 3 mm, dehiscing by longitudinal dorsal and ventral slits. Seed few per capsule, lenticular, ca. 2 mm in diam., margin broadly winged, wing irregularly dentate; seed coat with small prominent reticulations. Fl. Jun-Aug, fr. Jul-Sep.

Lakes, swamps, rice fields; near sea level. S Fujian (Longhai), S Guangxi (Dongxing) [Indonesia, Malaysia, Myanmar, Thailand, Vietnam].


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