Cypripedium macranthos

Cypripedium macranthos is a species in the genus Cypripedium.

Description

Plant blooms from spring to early summer with one to two 7.5cm flowers.

Distribution

Plants are found in damp meadows and forest in Middle and Eastern Russia, Siberia, Korea, and Taiwan, China at elevations of 0 to 2400 meters.

Culture

Grow in partial shade in cool temperatures. Potting mix should have a pH between 6 and 7. Plants can be potted in full gravel or a well drain mix which does not retain water.

Variants

Image	Name	Description
	Cypripedium macranthos var. atropurpureum (Aver. 1999)	Sepals and lip are purple.
	Cypripedium macranthos var. alboroseum (Aver. 1999)	Sepals and lip are white with light pink near center.

Naming

Common Names: The Large Flowered Cypripedium

Synonym

1. Cypripedium macranthos nothof. alboroseum Aver. 1999
2. Cypripedium macranthos nothof. albostriatum Aver. 1999
3. Cypripedium macranthos nothof. flavoroseum Aver. 1999
4. Cypripedium macranthos var. atropurpureum Aver. 1999
5. Cypripedium macranthos var. flavum in ?
6. Cypripedium macranthos var. ventricosum (Sw.) Hook.f. 1890
7. Cypripedium speciosum Rolfe 1911
8. Cypripedium thunbergii Blume 1859
9. Cypripedium ventricosum Sw.
10. Sacodon macranthon (Sw.) Raf.
11. Sacodon ventricosum Raf. 1836

Resources

Bumblebee pollination of Cypripedium macranthos var. rebunense (Orchidaceae); a possible case of floral mimicry of Pedicularis schistostegia (Orobanchaceae)

Cypripediquinone; A a new phenanthraquinone from Cypripedium macranthum