Cypripedium kentuckiense

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Cypripedium kentuckiense
Cypripedium kentuckiense.jpg
Status TNC G3.svg
Vulnerable  (NatureServe) [2]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Cypripedioideae
Genus: Cypripedium
Species:
C. kentuckiense
Binomial name
Cypripedium kentuckiense

Cypripedium kentuckiense, the Kentucky lady's slipper or southern lady's slipper, is a member of the orchid genus Cypripedium . Members of this genus are commonly referred to as lady's slipper orchids.

Contents

Originally thought to be an aberrant form of Cypripedium parviflorum var. pubescens, the morphology of C. kentuckiense suggests it is a species of its own. However, molecular evidence suggests that C. kentuckiense is more closely related to Cypripedium parviflorum var. parviflorum than it is to Cypripedium parviflorum var. pubescens.

Description

C. kentuckiense has the largest flower of in the genus Cypripedium. The petals and sepals are greenish striped and mottled with purple while the very large lip, or pouch, is a creamy ivory or pale yellow. The plant can be up to 70 cm (28 in) tall and has bract leaf-like leaves that are up to 12 cm (4.7 in) long. Each plant is usually single-flowered.

Distribution and habitat

Cypripedium kentuckiense is found in a large swathe through the Southern United States including Alabama, Arkansas, Georgia, Kentucky, Louisiana, Mississippi, Oklahoma, Tennessee, and Texas. Additionally, there is a small patch in Lancaster County, Virginia. [3] [4] [5] [6]

The range of this species is not continuous; it mostly consists of relatively isolated patches. It is found in a variety of habitats including floodplains, ravines, forests, and other areas on acidic or sandy soils. [7]

References

  1. Bartlett, M.; Sharma, J.; Rankou, H. (2014). "Cypripedium kentuckiense". IUCN Red List of Threatened Species . 2014 e.T13254117A13254142. doi: 10.2305/IUCN.UK.2014-1.RLTS.T13254117A13254142.en . Retrieved 22 December 2025.
  2. "Cypripedium kentuckiense". NatureServe .
  3. "Cypripedium kentuckiense C.F. Reed | Kentucky lady's slipper". USDA Plants Database.
  4. "County distribution map". Biota of North America Program.
  5. "Cypripedium kentuckiense C.F.Reed". Digital Atlas of the Virginia Flora.
  6. Allen, C.M. (2004). "A quantitative study of the vegetation surrounding yellow lady-slipper orchid (Cypripedium kentuckiense, Orchidaceae) populations at Fort Polk in west central Louisiana". Sida: 409–417.
  7. "Southern Lady's-slipper". Center For Plant Conservation. Retrieved 2024-08-25.