Orchidaceae
Cypripedium

Cypripedium micranthum Franch.

First published in J. Bot. (Morot) 8: 265 (1894)
This species is accepted
The native range of this species is China (Sichuan, Chongqing). It is a rhizomatous geophyte and grows primarily in the temperate biome.

Descriptions

Biology

Flowering in late May and Early June.

Distribution

China (E. Sichuan only).

Ecology

In woods; 2000-2500 m. Flowering in late May and Early June.

General Description

A dwarf terrestrial herb with an elongate slender creeping subterranean rhizome, 1.5-2.5 mm in diameter. Stems erect, to 14 cm apart on the rhizome, 2-6 cm long, covered by two acute sheaths, bifoliate at apex. Leaves subopposite, spreading, prostrate on substrate, obovate-elliptic or elliptic, shortly apiculate, 3.3-9 cm long, 2-6.5 cm wide, green, glabrous. Inflorescence erect, one-flowered. Flower yellowish; pedicel 2-3.5 cm long, densely redvillose; pedicel 3-5 cm long, densely reddish pubescent, elongat-. ing to 15-25 cm after fertilisation; ovary 0.5-0.6 cm long, densely red-villose. Dorsal sepal ovate, acute, 1.4-1.7 cm long, 0.9-1.1 cm wide, pustular on inner surface, densely villose on outer surface; synsepal elliptic, shortly bifid at the apex, 1.1-1.4 cm long, 0.7-0.8 cm wide, pustular on inner surface and densely villose without. Petals enfolding sides of the lip, obliquely oblong-elliptic, acute, 1.3-1.4 cm long, 0.5-0.6 cm wide, very shortly bristly in apical part. Lip 0.8-1 cm long, papillose in front. Column 0.35-0.4 cm long; staminode oblong, rounded at apex, 0.3-0.35 cm long, 0.3 cm wide, papillose.

[C-EM]

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: threatened. Confidence: confident
[AERP]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/43316804/43327684

Conservation
EN - endangered
[IUCN]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Cypripedioideae: e-monocot.org

    • All Rights Reserved

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0