|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/.
ECCB. 1995. Red Data Book of European Bryophytes. European Committee for Conservation of Bryophytes (ECCB), Trondheim.
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.
Konstantinova, N.A. and Czernjadieva, I.V. 1995. De hepaticis in regione fluxus medii fl. Sob (Ural polaris) obviis notula. Novosti Sistematiki Vysshikhi Nizshikh Rastenii. Kiev 30:110–121.
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 25 May 2018.|
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