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This species is accepted, and its native range is Alaska to Canada, Montana.
A specimen from Kew's Herbarium

[C-EM]
Distribution

Canada (Quebec, Ontario, and Manitoba across to British Colombia and the Yukon), D.S.A. (Montana, Alaska).

Ecology

Usually found in rich moist coniferous woodlands, in deep ravines, in tundra, and on the edges of streams and lakes, on gravel outwashes, dunes, and talus slopes, usually on neutral or acidic soils, in limestone gravel, moderately acid coniferous humus (CorreII1950), or sphagnum (Morris and Eames 1929); to 2200 m in British Colombia. Flowering in June and early July.

General Description

A small erect herb with villose pubescent leafy stems 12-38 cm tall arising from a short stout creeping rhizome. Leaves three to five, obviously pleated, elliptic, ovate-lanceolate or ellipticlanceolate, obtuse to acute, 5-16 cm long, 1.5-5 cm wide, pubescent on both sides, ciliate, sheathing at the base and subtended by two sheaths. Inflorescence one- or rarely two-flowered; peduncle 7-12 cm long, villose-pubescent; bract erect, ovate-lanceolate to elliptic, acute, 3-8 cm long, 1-2 cm wide, pubescent. Flower small, the size of a small dove's egg, with pale green or yellow-green sepals, white petals and a white lip, spotted inside with purple, the staminode white with a yellow apex spotted with purple; pedicel and ovary densely villose, pedicel distinct. Dorsal sepal hooded over lip, orbicular to orbicular-ovate, shortly apiculate, 1.5-2 cm long, 1-1.5 cm wide, pubescent on outer surface and ciliate; synsepal appressed to lip, elliptic-orbicular, bifid at apex, 1-1.5 cm long, 1-1.3 cm wide, ciliate, the lateral sepals sometimes free to base. Petals flat, spreading- decurved, linear--oblong, rounded at apex, 1.2-2 cm long, 0.3-0.4 cm wide. Lip small, obovoid-subgldbose, 1.2-2 cm long, 0.8-1 cm across, glandular within and outside at the base. Column short; staminode ovate-eordate to ovate-oblong, retuse at apex, longitudinally grooved, 0.6 cm long, 0.4-0.5 cm wide.

Biology

Flowering in June and early July.

Native to:

Alaska, Alberta, British Columbia, Manitoba, Montana, Northwest Territorie, Nunavut, Ontario, Québec, Saskatchewan, Yukon

Cypripedium passerinum Richardson appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Richardson, J. [s.n.], Canada K000077966 isotype
Marie-Victorin, Fr. [24322], Québec K000077968 isotype
Drummond, T. [s.n.], USA K000363709
Richardson [345], Northern America K000363708
Marie-Victorin, Fr. [24322], Québec Cypripedium passerinum var. minganense K000077967 isotype

First published in Bot. App., ed. 2: 34 (1823)

Accepted by

  • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.
  • Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.

Literature

Cypripedioideae: e-monocot.org

  • Richardson, J. Original description of Cypripedium passerinum. 2, (1823).

Cypripedioideae: e-monocot.org
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Herbarium Catalogue Specimens
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Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0