4. Utricularia warburgii K. I. Goebel, Ann. Jard. Bot. Buitenzorg. 9: 64. 1890.
钩突耳草 gou tu er cao
Annuals, terrestrial. Rhizoids capillary, simple. Stolons capillary, branched. Traps on stolons and leaves, stalked, ovoid, 0.5-1 mm, with numerous stipitate glands on appendage and mouth margin, mouth lateral; appendage 1, dorsal, narrowly oblong-obovate, beaklike, apex obtuse. Leaves numerous, from peduncle base and stolon nodes, glabrous; leaf blade narrowly obovate-cuneate, 1-1.5 cm × 1.2-1.5 mm, membranous, vein 1, base attenuate onto petiole, margin entire, apex rounded. Inflorescences erect, 5-17 cm, (1 or)2-6-flowered, glabrous; peduncle terete, 0.3-0.4 mm thick; scales few, similar to bracts; bracts basisolute, ovate, ca. 1.3 mm, base truncate, margin denticulate, apex obtuse. Pedicel erect at anthesis and in fruit, 0.7-1 mm, minutely papillose; bracteoles basisolute, oblong, slightly shorter than bracts, base rounded to obliquely truncate, apex acute. Calyx lobes slightly convex, 2-3 mm, subequal, minutely papillose, glabrous; lower lobe oblong, apex emarginate; upper lobe broadly ovate, apex rounded. Corolla pale bluish purple, 6-8 mm; lower lip transversely elliptic, base with a conspicuous swelling, apex rounded; spur subulate, somewhat longer than lower corolla lip; palate with 2 curved hornlike processes; upper lip obovate-cuneate, apex emarginate. Filaments ca. 1 mm, straight; anther thecae ± distinct. Ovary ovoid; style short; stigma lower lip semicircular, upper lip deltoid. Capsule globose to ellipsoid, 1.8-2.2 mm, dehiscing by a short longitudinal ventral slit. Seeds obovoid, 0.2-0.3 mm; seed coat with prominent elongate reticulations and clavate papillae. Fl. May-Sep, fr. Jul-Oct.
● Wet grasslands, wet rocks; 800-2000 m. Anhui, Chongqing, Fujian, S Jiangsu, Jiangxi, Zhejiang.