Cypripedium passerinum

Sperlingsei Lady Slipper ( Cypripedium passerinum )

The Sperlingsei Lady Slipper ( Cypripedium passerinum ) is a species of the genus Cypripedium in the orchid family ( Orchidaceae).

Features

The Sperlingsei Lady Slipper is a perennial plant with a rhizome, the plant height 12-38, rarely to 50 centimeters reached. The 3-7 leaves measure 5 to 19 × 1.5 to 6 inches and are oval shaped to broad lanceolate. The flowers are solitary, rarely in pairs. The outer tepals are light or dark green, the inner lateral tepals are white. The upper outer perianth is rounded to broadly oval, up to 2 inches long. The lateral sepals are completely or only partially fused together. The lip is 1 to 2 inches long and white, rarely pink. The opening of the lip is of 9 to 13 millimeters is relatively large. The Staminodium is shaped heart-shaped to narrowly oval.

Blooms from June to July.

Occurrence

The Sperlingsei woman shoe comes in temperate to cool northwestern North America in moist coniferous forests, canyons, river and lake shores, dunes and tundra at neutral and acidic soils at altitudes from 0 to 2200 meters before.

Use

The Sperlingsei Lady Slipper is rarely used as an ornamental plant for containers.

Documents

• Eckhart J. Hunter, Friedrich Ebel, Peter Hanelt, Gerd Müller, K. (ed.): Rothmaler Exkursionsflora of Germany. Volume 5: Herbaceous ornamental and useful plants. Spektrum Akademischer Verlag, Berlin Heidelberg 2008, ISBN 978-3-8274-0918-8.
• Charles J. Sheviak: Cypripedium. In: Flora of North America Editorial Committee ( eds.): Flora of North America North of Mexico. 26, Oxford University Press, New York and Oxford 1993 , p 503 ( eFloras.org, accessed on 22/01/2009 ).