Viola cryana
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Viola cryana (French name: Violette de Cry ) is an extinct species of violet ( Viola ) that was endemic to the French Yonne department . Viola cryana was discovered in 1860, but not scientifically described until 1878.
description
This biennial or perennial herbaceous plant was no taller than twelve centimeters and had a smooth stem . The bright green leaves were thick and fleshy. The stipules were incised and had a central lobe with entire margins.
The relatively large flowers were zygomorphic . The petals were light purple. At six to seven millimeters, the spur was larger than the chalice . The plant bloomed from May to June.
die out
Viola cryana grew up in very limited limestone - outcrops in the area around Cry southeast of Tonnerre in the French department of Yonne . Due to the destruction of its habitat by limestone mining for cement production and overexploitation by plant collectors, the species was already considered extinct by 1930.
literature
- Balouet, J.-C. & Alibert, E .: Extinct Species of the World , Barrons, New York, London, Toronto, Sydney, 1989. ISBN 2-7373-0254-4
- Gillot, FX: Note sur le Viola cryana (Violette de Cry, Ravin) In: Bulletin de la Societe botanique de France. Volume 25, 1878. (First scientific description in French online version )
Web links
- The Open Door Web Site - Cry Violet (English)
- Conservatoire botanique national du Bassin parisien (French)
- Image of a herbarium specimen
- Viola cryana inthe IUCN 2013 Red List of Threatened Species . Posted by: Juillet, N., 2011. Retrieved September 12, 2013.
