Convallaria keiskei Miquel; C. keiskei var. trifolia Y. C. Chu et al.; C. majalis var. manshurica Komarov.

Plants 18--30 cm tall, glabrous. Petiole 8--20 cm; leaf blade abaxially glaucescent, elliptic to ovate-lanceolate, 7--20 × 3--8.5 cm, base cuneate, apex subacute to acuminate. Scape slightly arching, 15--30 cm. Bracts lanceolate, 3--6 mm, much shorter than pedicel. Pedicel slightly curved, 0.6--1.5 cm, articulate apically. Perianth white, 5--7 × 5--7 mm; lobes ovate-deltoid, ca. 2 × 2 mm, 1-veined, apex obtuse. Stamens ca. 4 mm; filaments widened gradually toward base; anthers suboblong. Style columnar, 2.5--3 mm. Berry red at maturity, globose, 6--12 mm in diam. Fl. May--Jun, fr. Jul--Sep. 2 n = 38*.

Moist places in forests, shady hillsides along ravines; 800--2500 m. Gansu, Hebei, Heilongjiang, Henan, Hunan, Jilin, Liaoning, Nei Mongol, Ningxia, Shaanxi, Shandong, Shanxi, Zhejiang [Japan, Korea, Mongolia, Myanmar, Russia; Europe, North America].