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This species is accepted, and its native range is Central Taiwan.
Cypripedium formosanum (Photograph by S. W. Chung, courtesy of the Swiss Orchid Foundation)

[C-EM]
General Description

A terrestrial herb with erect glabrous flowering stems arising from a creeping, branching rhizome, 0.2-0.3 cm in diameter, bearing remote scales and clustered roots at intervals along the length. Stems 10-25 cm long, enclosed below by five to eight imbricate obtuse sheaths, two-leaved at the apex. Leaves plicate, spreading, flabellate, obtuse, rounded or apiculate at the apex, 10-13 cm long, 7-11 cm wide, ciliate on the entire to erose margin, with 11 to 13 radiating veins. Inflorescence one-flowered) erect; peduncle 10-11 cm long, sparsely pubescent; bract ovate-lanceolate, acute, sparsely pubescent. Flower nutant, white to pink with crimson spots at the base of the petals and larger spots on the lip especially within, the staminode purple-red with a white tip; pedicel, and ovary 1.8-2.3 cm long, densely shortly tomentose. Dorsal sepal curving forwards, ovate-elliptic to narrowly elliptic, acute or acuminate, 4.5 cm long, 2-2.5 cm wide, pilose towards the base, .ciliate; synsepaI elliptic, naviculiform, acuminate and bidentate at the apex, 4.5-5.2 cm long, 2.5-3 cm wide, pilose towards the base. Petals spreading-deflexed, flat, oblong-oblanceolate, acute or acuminate, 4.8-5.3 cm long, 1.5-1.8 cm wide, pilose towards the base. Lip calceiform, ovoid to ellipsoidal in shape, with a narrowly pandurate mouth, often shortly apiculate at apex, 5.5-6.5 cm long, 4 cm wide, the margins incurved, the veins sunken especially towards the apex, barbate-pubescent within. Column c. 1 cm long, greenish white; staminode convex, ovate-sagittate, cuspidate or blunt at apex, c. 1 cm long, 0.7-0.8 cm wide.

Biology

Flowering in April and May.

Ecology

In forest and open, damp places; 2300-3000 m. Flowering in April and May.

Native to:

Taiwan

Cypripedium formosanum Hayata appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Apr 16, 2013 s.coll. [s.n.] 77804.000
China 56277.000
Chase [16308] 71423.000
Hayata, B. [s.n.], Taiwan K000077936
Hayata, B [s.n.], Taiwan K000077937
Taiwan Cypripedium japonicum var. formosanum 29047.612
Cypripedium japonicum var. formosanum 56280.000

First published in Icon. Pl. Formosan. 6: 66 (1916)

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.
  • Wu, Z. & Hong, D. (eds.) (2009). Flora of China 25: 1-570. Missouri Botanical Garden Press, St. Louis.

Literature

Cypripedioideae: e-monocot.org

  • Hayata, B. Original description of Cypripedium formosanum. 6, (1916).

Cypripedioideae: e-monocot.org
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Herbarium Catalogue Specimens

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

Kew Science Photographs
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