鬼灯檠 gui deng qing

Rodgersia japonica A. Gray ex Regel.

Herbs 60-100 cm tall. Rhizomes transversely elongating, thick. Stems glabrous. Basal leaves palmately compound; petiole 15-30 cm, pilose, both sheathlike and long ciliate at base; leaflets 5(-7), subobovate, 15-30 × 10-25 cm, apex 3-5-lobed; lobes pilose abaxially along veins, glabrous adaxially, margin serrate, apex acuminate. Cauline leaves alternate, smaller than basal ones. Panicle terminal, 15-30 cm, many flowered; branches and pedicels densely paleaceous hairy, hairs sometimes with glandular heads. Sepals 5-7, white, subovate, ca. 2.1 × 1.1 mm, abaxially and marginally sparsely glandular hairy, adaxially glabrous, pinniveined; veins not confluent at apex, apex acuminate. Petals absent. Stamens usually 10, ca. 4 mm. Carpels 2, proximally connate; ovary subsuperior, ovoid, ca. 1.5 mm; styles ca. 1.3 mm. Capsule many seeded. Fl. Jun-Jul. 2n = 30.

Shaded slopes. Jilin, Liaoning [Japan, Korea].