Plagiochila columbiana A.Evans (1896:189)
Taxonomy & Nomenclature
"Most species of Plagiochila exhibit considerable variation in dentition of leaves. The description suggests that P. columbiana is very likely a weak form of P. asplenioides with slightly toothed or entire leaves."
Source: NatureServe
Conservation Status
Missing or invalid (synonym of P. asplenoides)
Last record: 5 December 1987?
Not found during searches of all known historical sites in 1994-95 (Hicks & Amoroso, 1996).
Distribution
North Carolina & Washington, USA (contra Frye & Clark, 1945:442)
Recorded from Pennsylvania and Virginia by (Frye & Clark, 1945:442), but these records are considered doubtful (Schuster, 1980:383; Stotler & Crandall-Stotler, 2017:665).
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Evans, A. W. (1896). Notes on the North American species of Plagiochila. Botanical Gazette 21(4): 185-194.
Other references:
Frye, T. C. and Clark, L. (1945). Hepaticae of North America. Part III. Univ. Wash. Publ. Biol. 6: 337-564.
Hicks, M. L. and Amoroso, J. L. (1996). Broyphyte status survey: Plagiochila columbiana Evans. North Carolina Natural Heritage Program and Endangered Species Field Office, US Fish and Wildlife Service, Asheville, North Carolina. Revised 1997. 5 pp. and addenda.
Schuster, R. M. (1980). The Hepaticae and Anthocerotae of North America, East of the Hundredth Meridian, Vol. IV. Columbia University Press, New York.
Söderström, Lars et al. (2016). World checklist of hornworts and liverworts. PhytoKeys 59: 1-828. https://doi.org/10.3897/phytokeys.59.6261
Stotler, Raymond E. and Crandall-Stotler, Barbara. (1977). A checklist of liverworts and hornworts of North America. The Bryologist 80(3): 405-428. https://doi.org/10.2307/3242017
Stotler, Raymond E. and Crandall-Stotler, Barbara. (2017). A synopsis of the liverwort flora of North America north of Mexico. Annals of the Missouri Botanical Garden 102(4): 574-709. https://doi.org/10.3417/2016027
https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.125840/Plagiochila_columbiana
https://vanishingflora.proboards.com/thread/1886/plagiochila-columbiana