Cypripedium guttatum Swartz
- genus Cypripedium L.
Plants 15-25 cm tall, with a slender, creeping rhizome. Stem erect, pubescent and glandular hairy, with several sheaths at base and 2 or rarely 3 leaves above. Leaves subopposite or occasionally alternate, at or above middle of plant; blade often turning black or blackish when dried, elliptic, ovate or ovate-lanceolate, 5-12 cm long, 2.5-4.5 cm wide, abaxial veins sparsely pubescent or subglabrous, apex acute or acuminate. Inflorescence terminal, with 1 flower; peduncle densely pubescent and glandular hairy; floral bracts foliaceous, ovate-lanceolate, usually 1.5-3 cm, minutely ciliate, apex acute or acuminate; pedicel and ovary 1-1.5 cm, with glandular hairs. Flower white with purplish red or brownish red markings. Dorsal sepal ovate-elliptic or broadly ovate-elliptic, 1.5-2.2 cm long, 1.2-1.6 cm wide, often sparsely puberulent toward abaxial base, apex acute or shortly acuminate; synsepal narrowly elliptic, 1.2-1.8 cm long, 0.5-0.6 cm wide, apex shallowly 2-lobed. Petals often subspatulate or pandurate, 1.3-1.8 cm long, 0.5-0.7 cm wide, hairy toward adaxial base, apex often slightly dilated and rounded; lip deeply pouched, pitcher-shaped, ca. 1.5 cm long, 1.5 cm wide, lacking an incurved apical margin, with a broad mouth, inner bottom hairy. Staminode ovate-elliptic, 4-5 mm long, 2.5-3 mm wide, abaxially broadly keeled, adaxially minutely longitudinally ridged, apex emarginate or subtruncate. Capsule pendent, nearly narrowly ellipsoid, ca. 2.5 cm long, 8-10 mm wide, puberulent.
The chromosomal number of Cypripedium guttatum is 2n = 20 (Lavrenko et al., 1991; Stepanov, 1994).
Ecology and Distribution
Flowering from May to July; fruiting from August to September.
Cypripedium guttatum is occurring in Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Ningxia, Shaanxi, Shandong, Shanxi, Sichuan, Xizang, NW Yunnan of China, Bhutan, Korea, Russia (Siberia), Europe, North America.
Growing in forests, thickets, grasslands; 500-4000 m.
- Cypripedium bouffordianum Yong H. Zhang & H. Sun (synonym)
- Cypripedium orientale Sprengel (synonym)
- Cypripedium guttatum f. albiflorum Averyanov (synonym)
- Cypripedium guttatum f. punicum Y. N. Lee (synonym)
- Cypripedium guttatum var. koreanum Nakai (synonym)
- Cypripedium variegatum Georgi (synonym)