长萼鹿蹄草 chang e lu ti cao

Herbs 14–21 cm tall. Rhizome long, slender, branched. Leaves 2–6, crowded at base of caudex; petiole 1.5–3.5 cm, often shorter than blade; leaf blade light green with purple abaxially, green adaxially, elliptic, obovate, or ovate, 2.3–4.2 × 1.4–3.8 cm, leathery, base broadly cuneate or orbicular, margin entire or slightly crenate, apex obtuse or rounded. Scape subtended by 1–3 scalelike bracts; raceme 6–10(–15)-flowered, 3–5 cm. Pedicel 3–4 mm; bracts lanceolate, 5–7 × 1.4–1.5 mm, longer than pedicel, membranous. Flowers spreading, saucer-shaped, ca. 1 cm in diam. Sepals lanceolate, 4.5–5 × ca. 1 mm, margin entire, apex acuminate. Petals white, obovate, 5–6 × 3–4 mm, apex acute or obtuse. Filaments glabrous; anthers yellow, 2–2.5 × ca. 1 mm, tubules present. Style not or slightly exserted, 6–6.5 mm, nearly erect or upper part curved upward, without dilated ring at apex. Capsule 4–6 mm in diam. Fl. Jul–Aug, fr. Aug–Sep.

Betula forests, coniferous forests; 700–2100 m. S Jilin (Changbai Shan) [Korea].