驴蹄草叶报春 lu ti cao ye bao chun

Herbs perennial, efarinose. Basal bud scales reddish brown, oblong, 2--7 cm. Leaves not well-developed at anthesis, enlarging to 10--20 cm; petiole narrowly winged, 1.5 to 2 X as long as leaf blade; leaf blade suborbicular to broadly ovate, 4--8 X 3--7 cm, abaxially minutely reddish brown or blackish glandular, base rounded to subcordate, margin irregularly coarse dentate, apex rounded. Scapes 5--12 cm, elongating to 20 cm, umbels 3--7-flowered; bracts linear-lanceolate, 3--7 mm. Pedicel 1--3 cm, glandular. Flowers heterostylous. Calyx reddish, campanulate, 6.5--7.5 mm, parted to middle; lobes broadly ovate, glandular ciliate, margin entire to obscurely dentate, apex obtuse to acute. Corolla bright yellow; limb 1.5--2 cm wide; lobes oblong to obovate, emarginate. Pin flowers: corolla tube ca. 1.2 cm; stamens ca. 5 mm above base of corolla tube; style ca. as long as tube. Thrum flowers: corolla tube 1.4--1.5 cm; stamens toward apex of tube; style slightly shorter than calyx. Capsule disintegrating at maturity. Fl. Jun.

Marshes, bog margins; ca. 4000 m. SE Xizang [N Myanmar].