Cleistesiopsis

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Monocots
Ordo: Asparagales

Familia: Orchidaceae
Subfamilia: Vanilloideae
Tribus: Pogonieae
Genus: Cleistesiopsis
Overview of species (3)

C. bifaria – C. divaricata – C. oricamporum
Name

Cleistesiopsis Pansarin & F.Barros, Kew Bull. 63: 444 (2008 publ. 2009)

Type species: Cleistesiopsis divaricata (L.) Pansarin & F.Barros, Kew Bull. 63: 446 (2008 publ. 2009)}}

Distribution
Native distribution areas:

Northern America
Northeastern U.S.A.
New Jersey, West Virginia.
Southeastern U.S.A.
Alabama, Delaware †, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia.

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References

Pansarin, E.R. & Barros, F. de 2009. Kew Bulletin, 63: 444.

Links

Global Biodiversity Information Facility. 2021. GBIF Backbone Taxonomy. Checklist dataset. Taxon: Cleistesiopsis. Accessed: 2021 May 14.
Govaerts, R. et al. 2021. Cleistesiopsis in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 May 14. Reference page.
Govaerts, R. et al. 2021. Cleistesiopsis in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 May 14. Reference page.
Hassler, M. 2021. Cleistesiopsis. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2021. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2021 May 14. Reference page.
International Plant Names Index. 2021. Cleistesiopsis. Published online. Accessed: 14 May 2021.
Tropicos.org 2021. Cleistesiopsis. Missouri Botanical Garden. Published on the internet. Accessed: 2021 May 14.

Vernacular names

English: Rosebud orchids

Cleistesiopsis is an orchid genus in the tribe Pogonieae.[2] Its members were included in Cleistes until 2009. Cleistesiopsis is native to the eastern and southeastern United States from New Jersey south to Florida, and west to Kentucky and Louisiana.[3] The common names are rosebud orchid and small spreading pogonia.

Cleistesiopsis is a terrestrial orchid with an underground network of spreading fibrous roots. It is found in small clusters of single flowering stems, each with a single leaf blade about halfway up the 30 – 45 cm stem. A smaller floral bract clasps around the base of the flower and appears as a second smaller leaf blade. The flower has three brown-green sepals spreading upward from the stem. Two upper petals and a lip below form the flower tube.

Cleistesiopsis flowers in the spring (April to May) along coastal plain area and around July in the mountains. It prefers savannas, meadows, openings woodlands, where the soil is acidic and moist and made up of rotting pine or other organic material, such as a boggy pine woodland. In the mountains that habitat may be xeric.[4]

The plants are commonly up to 30 to 45 centimeters in height. The flowers are 2–3 cm across, depending on species.
Cleistes divaricata in Carrabelle

Species

Three species are recognized as of May 2014:[3]

Cleistesiopsis bifaria (Fernald) Pansarin & F.Barros - Virginia to Florida, west to Kentucky and Louisiana
Cleistesiopsis divaricata (L.) Pansarin & F.Barros - New Jersey to Florida
Cleistesiopsis oricamporum P.M.Br. - from Louisiana to North Carolina

References

Kew Bulletin 63: 444 (2008 publ. 2009)
Chase, Mark W.; Cameron, Kenneth M.; Freudenstein, John V.; Pridgeon, Alec M.; Salazar, Gerardo; van den Berg, Cássio; Schuiteman, André (2015). "An updated classification of Orchidaceae". Botanical Journal of the Linnean Society. 177 (2): 151–174. doi:10.1111/boj.12234. ISSN 0024-4074.
Kew World Checklist of Selected Plant Species, Cleistesiopsis
Gregg, K. B. 1989. Reproductive biology of the orchid Cleistes divaricata (L.) Ames var. bifaria Fernald growing in a West Virginia meadow. Castanea 54: 57–78.