Gymnadenia

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The genus Gymnadenia contains 22 species of terrestrial orchid.

They can be found in damp meadows, fens and marshes, and on chalk or limestone often in alpine regions of Europe and Asia up to the Himalayas. Fragrant Orchid (Gymnadenia conopsea) has been introduced into the USA.

These hardy terrestrial orchids are deciduous. They survive the winter through their corms, two deep-cut bulbs. Long lanceolate green leaves grow at the bottom of the stem. There are some small leaves at the stop of the stem.

They flower during the summer. The inflorescence is a dense cylindrical spike between 5 and 30 cm long. It can consits of up to 150 small pleasant-smelling flowers. Their color can vary from pale purple to pink and white. The lip is wide with three lobes. The marginal petals are horizontal. There is a long, thin, threadlike spur.

Species

A nothogeneric name is the name at generic rank for a hybrid between representatives of two or more genera.

• Gymnadenia archiducis-joannis (Austria)
• Gymnadenia austriaca (C. Europe to Pyrenees).
  • Gymnadenia austriaca var. austriaca (C. Europe). Tuber geophyte
  • Gymnadenia austriaca var. gallica (Pyrenees, W. Alps) Tuber geophyte
• Gymnadenia bicornis (Tibet).
• Gymnadenia borealis (N. & C. Europe).
• Gymnadenia × breinerorum (G. cenisia × G. corneliana) (France).
• Gymnadenia buschmanniae (Italy)
• Gymnadenia carpatica (E. Carpathians).
• Gymnadenia cenisia (France)
• Gymnadenia × chanousiana (G. cenisia × G. conopsea) (France).
• Gymnadenia conopsea : Fragrant Orchid (Europe to Temp. E. Asia)
• Gymnadenia corneliana (SW. Alps)
• Gymnadenia crassinervis (China
• Gymnadenia × delphineae (G. corneliana × G. rhellicani) (France)
• Gymnadenia dolomitensis (S. Alps).
• Gymnadenia × eggeriana (G. austriaca var. gallica × G. rhellicani) (France).
• Gymnadenia emeiensis (China – Sichuan).
• Gymnadenia frivaldii (Balkan Pen. to S. Carpathians)
• Gymnadenia gabasiana (Pyrenees)
• Gymnadenia × godferyana (Alps)
• Gymnadenia × heufleri (G. nigra × G. odoratissima) (Alps)
• Gymnadenia × intermedia (G. conopsea × G. odoratissima) (Europe).
  • Gymnadenia × intermedia nothosubsp. intermedia (Europe) Tuber geophyte
  • Gymnadenia × intermedia nothosubsp. proxima.(G. conopsea × G. odoratissima subsp. ongicalcarata) (SW. Europe) Tuber geophyte
• Gymnadenia lithopolitanica (SE. Alps)
• Gymnadenia microgymnadenia (NC. China).
• Gymnadenia nigra (Europe, Israel).
• Gymnadenia odoratissima (Europe).
  • Gymnadenia odoratissima subsp. longicalcarata (Spain). Tuber geophyte
  • Gymnadenia odoratissima subsp. odoratissima (Europe) Tuber geophyte
• Gymnadenia orchidis (Himalaya to China)
• Gymnadenia × pyrenaeensis (G. conopsea × G. gabasiana) (Pyrenees)
• Gymnadenia rhellicani (W. Alps)
• Gymnadenia × robatschiana (G. cenisia × G. rhellicani) (France).
• Gymnadenia rubra (C. & E. Alps, S. Carpathians).
• Gymnadenia stiriaca (Austria).
• Gymnadenia taquetii (Korea) (.
• Gymnadenia × truongiae (G. conopsea × G. corneliana) (France).
• Gymnadenia × turnowskyi (G. conopsea × G. lithopolitanica) (Austria)
• Gymnadenia × wettsteiniana (G. nigra × G. rubra) (Alps)
• Gymnadenia widderi (NE. Alps, C. Italy).

Reference

Delforge, P. 1998. Contribution taxonomique et nomenclaturale au genre Gymnadenia (Orchidaceae). (Nomenclatural and taxonomical contribution to the genus Gymnadenia (Orchidaceae). Nat. Belg. 79(4): 251-256.