红花鹿蹄草 hong hua lu ti cao

Pyrola rotundifolia Linnaeus var. incarnata de Candolle, Prodr. 7: 773. 1839; P. asarifolia var. incarnata (de Candolle) Fernald; P. incarnata (de Candolle) Freyn; P. incarnata var. ovatifolia Y. Z. Zhao; P. rotundifolia subsp. incarnata (de Candolle) Krylov; P. rotundifolia var. purpurea Bunge.

Herbs 1–5 cm tall. Rhizome creeping, long, somewhat thick, 0.7–2 mm in diam., branched, with sparse fine roots. Stems ascending. Leaves appearing radical, 3–8, in 2 or 3 subverticils of 3 or 4 each; petiole 3–5 cm; leaf blade pale green abaxially, green and shiny adaxially, elliptic or ovate-elliptic, 2–5.5 × 1.5–5.5 cm, base rounded or scarcely cordate, rarely subacute, margin obscurely serrulate, apex rounded to obtuse. Scape erect, 10–25 cm tall, angled, glabrous, with 4 or 5 broadly lanceolate-elliptic membranous basal scales and 1–4 lanceolate scales near middle; raceme densely 7–15-flowered. Bracts broadly lanceolate, membranous, apex acuminate. Flowers drooping, zygomorphic. Sepals narrowly ovate to broadly lanceolate, ca. 2 × as long as wide, 1.7–4.7 × 1.1–2.3 mm, apex acute to acuminate. Petals rose, 5–9 × 3–6 mm. Filaments curved upward; anthers dark purple, gathered above style, 1.4–3 mm, tubules present, opening by narrow terminal pores. Style exserted, curved, 6–10 mm, dilated at apex into a ring; stigma with a collar and 5 erect cylindric lobes. Capsules 7–8 mm in diam. Fl. Jun, fr. Jul–Oct.

Dry deciduous broad-leaved and coniferous forests; sea level to 2500 m. Hebei, Heilongjiang, ?Henan, Jilin, Liaoning, E Nei Mongol, ?Ningxia, Shanxi, ?Sichuan, Xinjiang [Japan, N Korea, Mongolia, Russia].