Nigritella austriaca (syn: Nigritella nigra subsp. austriaca ; Gymnadenia austriaca) (NL: "Oostenrijkse Vanilleorchis" / EN: ? / DE: Österreichisches Kohlröschen (Schwärzlein, Brändele, Brunelle, Blutrösli, Blutströpfli, Mohrenköpfli, Schokoladenblümli, Vanilleblümli) / FR: Nigritelle d'Autriche) is a species of European terrestrial Orchid. In the Italian Dolomites two "black" Nigritella's can be found: N. rhellicani (see image posted on 16 aug 2011) and N. austriaca (this image). The two are very similar in appearance, so a realy close look is needed for proper determination. The plant height of both species is 15 (10-20 cm). The flowers of N.austriaca are a little brighter and therefore slightly more reddish. The inflorescence is shorter than N.rhellicani, hemispherical to spherical flourished, rather broader than high. Typically is the the strong scent of chocolate / vanilla. The flowers are also slightly larger (lip: 7,5-9,6 mm) than those of N. rhellicani (lip: 5-7 mm). A good magnifying glass is needed to make the difference at the edge of the lower bracts visible: In N. rhellicani this often carries a seam of 0.05-0.1 mm long papillae while on N. austriaca the edge is smooth or bumpy, filled with more than a few very short papillae. N.austriaca blooms at the same location approximately 8-10 days before N.Rhellicani. N. austriaca is tetraploid (2n = 80) and has an apomictic reproduction.
Image: Tre Cime di Lavaredo (IT) - 05/07/2011
© Johan Dierckx
The photos on this site are copyrighted, which prohibits anyone to use them to sell, give away, use in email or newsgroups, use in a homepage or otherwise showing to the public without my explicit, prior, written permission. Please feel free to use the "contact"-button below to contact me with any questions.
All species are photographed in their natural habitat, without cutting or capturing them, and with maximal respect and the least possible disturbance to the environment.
(To see species in the same taxonomic rank (Kingdom, Phylum, Class, Order, Family, Genus), please use the tags provided with the image. The last tag is the Iso-code for the country where the image was taken. Image-date in DD/MM/YYYY format.)
Please feel free to visit my personal website http://www.diversitasnaturae.be/