|Scientific Name:||Jamesoniella undulifolia (Nees) K.Muell.|
|Red List Category & Criteria:||Vulnerable A1ac ver 2.3|
|Assessor(s):||Bryophyte Specialist Group|
|Reviewer(s):||Hallingbäck, T., Hodgetts, N., Geissler, P. & Tan, B. (Bryophyte Red List Authority)|
A decline of populations has occurred in at least part of its distribution area, and more than 20% of its populations have probably disappeared within the last 30 years (three generations). This species therefore meets the IUCN criteria for Vulnerable.
|Range Description:||Several old localities are known but it has disappeared from most of these in Europe; very few sites are unspoiled today except for several recently found sites in northern Asia (Siberia, Chukotka, Kamchatka, Manchuria) where it may be more common than is currently known.|
Native:Austria; China (Heilongjiang, Jilin, Liaoning); Czech Republic; Denmark; Finland; France; Germany; Greenland; Korea, Democratic People's Republic of; Norway; Poland; Russian Federation; Sweden; Switzerland; United Kingdom (Great Britain)
|Range Map:||Click here to open the map viewer and explore range.|
|Current Population Trend:||Unknown|
|Habitat and Ecology:||In fens and mires.|
|Major Threat(s):||Habitat destruction by drainage, flooding for reservoirs, forest planting and cattle grazing.|
Bryophyte Specialist Group. 2004. Specialist Group website. Available at: https://www.slu.se/en/collaborative-centres-and-projects/bryoconservation/.
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Grolle, R. 1971. Jamesoniella und Verwandte. Feddes Reportorium 82:1–100.
Hallingbäck, T. and Hodgetts, N. (eds). 2000. Mosses, Liverworts, and Hornworts. Status Survey and Conservation Action Plan for Bryophytes. IUCN, Gland, Switzerland and Cambridge, UK.
Hilton-Taylor, C. 2000. 2000 IUCN Red List of Threatened Species. IUCN, Gland, Switzerland and Cambridge, UK.
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Konstantinova, N.A. and Potemkin, A.D. 1996. Liverworts of the Russian Arctic: an annotated check-list and bibliography. Arctoa 6:125–150.
Piippo, S. 1990. Annotated catalogue of Chinese Hepaticae and Anthocerotae. Journal of the Hattori Botanical Laboratory 68:1–192.
Schuster, R.M. and Konstantinova, N.A. 1996. Studies on the distribution of critical arctic/subarctic Hepaticae with special reference to taxa found in Russia. Lindbergia 21:26–48.
Yamada, K. and Choe, D.-M. 1997. A checklist of Hepaticae and Anthocerotae in the Korean peninsula. Journal of the Hattori Botanical Laboratory 81:281–306.
|Citation:||Bryophyte Specialist Group. 2000. Jamesoniella undulifolia. The IUCN Red List of Threatened Species 2000: e.T39199A10169513.Downloaded on 15 December 2017.|