Erich Klein

Gymnadenia rhellicani (common name: dark vanilla orchid or black vanilla orchid) is a European species of orchid.

Gymnadenia corneliana is a species of orchid with light-pink petals, found only in the Southwestern Alps in a small region near the France-Italy border. It was first catalogued by Swiss botanist Gustave Beauverd. Some specimens of this orchid display slightly darker petals, although this is uncommon. This flower, like many orchids in its genus, is said to emit a pleasant odor resembling that of vanilla.

Gymnadenia widderi is a species of orchid native to the central Alps and central Italy.

Nigritella archiducis-joannis (German: Erzherzog-Johann-Kohlröschen) is a species of orchid endemic to a few locations in Totes Gebirge, the Dachstein, the Karawanken, the Koralpe – that is the Austrian states Styria, Upper Austria, Salzburg und Carinthia – as well as Triglav National Park.

Gymandenia stiriaca, the Salzkammergut vanilla orchid, is a species of orchid endemic to Austria.

Gymandenia lithopolitanica, the Austrian gymnadenia, is a species of orchid endemic to a portion of the eastern Alps spanning Austria and Slovenia.

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Gymnadenia dolomitensis is a species of orchid found in the Dolomites mountain range of Italy.

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Gymnadenia austriaca is a species of plant in the family Orchidaceae. It is endemic to the Alps and the Pyrenees, where it grows on calcareous alpine grassland from 1,500–2,500 metres (4,900–8,200 ft). It was first described by Teppner and Klein as a subspecies of Nigratella nigra (ssp austriaca) and was subsequently reclassified as G. austriaca as an apomictic member of the G. nigra group within the genus Gymnadenia.

Gymnadenia runei is an orchid in the genus Gymnadenia. It is endemic to the Tärnaby mountains in the central north of Sweden, and found in localities like calcium rich meadows. The species was discovered by Swedish botanist Olof Rune in 1960, and initially considered to be a hybrid between G. conopsea and G. nigra. In 1989, based on DNA research, it was reclassified as a separate species, originally under the name Gymnigritella runei.