Polystachya concreta (Jacq.) Garay & H.R. Sweet

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Polystachya concreta

Photo: Bart Wursten
Globe Rock, Vumba

Polystachya concreta

Photo: Bart Wursten
Globe Rock, Vumba

Polystachya concreta

Photo: Bart Wursten
Bomponi, Burma Valley

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Synonyms: Polystachya mauritiana Spreng.
Polystachya tessellata Lindl.
Common names:
Frequency: Frequent
Status: Native
Robust epiphyte or occasional lithophyte. Pseudobulbs conical, ribbed, sometimes obscured by bases of the large elliptic or oblanceolate leaves. Inflorescence up to 45 cm, shortly branched, many-flowered, often subsecund. Flowers normally bright yellow with a lighter lip but other colour forms occur.
Notes: There has been considerable debate on whether the African Polystachya tessellata is taxonomically distinct from the neotropical and Asian P. concreta. Garay & Sweet (1974) considered them conspecific but this was not accepted in Flora of Tropical East Africa (Cribb, 1984) and Flora Zambesiaca (la Croix & Cribb, 1998). However, after ample consideration recent research (Mytnik-Ejsmont, 2011) put P. tessellata again as a synonym of P. concreta.
Derivation of specific name:
Habitat: In riverine forest and high rainfall Brachystegia woodland.
Altitude range: (metres) Up to 1450 m
Flowering time:Jan - Mar
Worldwide distribution: The only more or less pantropical species in Polystachya, occurring throughout most of tropical Africa and South Africa, tropical Asia and in the neotopics from Florida to Brasil.
Zimbabwe distribution: E,S
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Images last updated: Saturday 1 April 2006

Ball, J.S. (1978). Southern African Epiphytic Orchids. Conservation Press, Johannesburg. Pages 168 - 169. as Polystachya tessellata (Includes a picture).

Cribb, P.J. (1984). Orchidaceae (Part 2) Flora of Tropical East Africa Pages 360 - 362. as Polystachya tessellata

Fabian, A. & Germishuizen, G. (1997). Wild Flowers of Northern South Africa. Fernwood Press, Vlaeburg. Pages 106 - 107. (Includes a picture).

Kimberley, M.J. (2003). A List of Epiphytic Orchids of Zimbabwe Excelsa 20 Page 50. as Polystachya tessellata

La Croix, I. & Cribb, P.J. (1998). Orchidaceae (Part 2) Flora Zambesiaca 11(2) Pages 338 - 339. as Polystachya tessellata

La Croix, I. et al. (1983). Malawi Orchids Volume 1 Epiphytic Orchids National Fauna Preservation Society of Malawi Pages 117 - 118. (Includes a picture).

La Croix, I. et al. (1991). Orchids of Malawi A.A. Balkema, Rotterdam Pages 212 - 214. as Polystachya tessellata (Includes a picture).

Linder, H.P. & Kurzweil, H. (1999). Orchids of Southern Africa A.A. Balkema, Rotterdam, the Netherlands ISBN 90-5410-445-7 Pages 412 - 413. as Polystachya tessellata

McMurtry, D., Grobler,L., Grobler, J. & Burns, S. (2008). Field Guide to the ORCHIDS of Northern South Africa and Swaziland Umdaus Press, PO Box 11059 Hatfield 0028 South Africa Pages 398 - 399. as Polystachya mauritiana (Includes a picture).

Mytnik-Ejsmont, J. (2011). A Monograph of the Subtribe Polystachyinae Schltr. (Orchidaceae) University of Gdansk, Poland, ISBN 978 83 7531 174 4 Pages 85 - 88. (Includes a picture).

Pooley, E. (1998). A Field Guide to the Wild Flowers of KwaZulu-Natal and the Eastern Region. Natal Flora Publications Trust. Durban. Pages 242 - 243. (Includes a picture).

Schelpe, E.A.C.L.E. (1976). A Provisional Checklist of the Orchidaceae of Mozambique South African Journal of Botany 42(4) Page 391. as Polystachya tessellata

Stewart, J. & Campbell, B. (1996). Orchids of Kenya Timber Press Inc, Portland Oregon, USA ISBN0-88192-357-5 Pages 73 - 74. as Polystachya tessellata (Includes a picture).

Strugnell, A.M. (2006). A Checklist of the Spermatophytes of Mount Mulanje, Malawi Scripta Botanica Belgica 34 National Botanic Garden of Belgium Page 140. as Polystachya tessellata

Wursten, B., Timberlake, J. & Darbyshire, I. (2017). The Chimanimani Mountains: an updated checklist. Kirkia 19(1) Page 84.

Other sources of information about Polystachya concreta:

Our websites:

Flora of Malawi: Polystachya concreta
Flora of Mozambique: Polystachya concreta
Flora of Zambia: Polystachya concreta

External websites:

African Plants: A Photo Guide (Senckenberg): Polystachya concreta
African Plant Database: Polystachya concreta
Biodiversity Explorer (Biodiversity of southern Africa): Polystachya concreta
BHL (Biodiversity Heritage Library): Polystachya concreta
EOL (Encyclopedia of Life): Polystachya concreta
ePIC (electronic Plant Information Center): Polystachya concreta
Flora Zambesiaca web site: Polystachya concreta
GBIF (Global Biodiversity Information Facility): Polystachya concreta
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network): Polystachya concreta
IPNI (International Plant Names Index): Polystachya concreta
Ispot Southern Africa: Polystachya concreta
JSTOR Plant Science: Polystachya concreta
Kew Herbarium catalogue: Polystachya concreta
Kew Monocotyledon checklist: Polystachya concreta
Mansfeld World Database of Agricultural and Horticultural Crops: Polystachya concreta
The Plant List (version 1.1): Polystachya concreta
Tropicos: Polystachya concreta

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-19

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2019). Flora of Zimbabwe: Species information: Polystachya concreta.
https://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=118460, retrieved 19 June 2019

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