Tomentypnum falcifolium Ren. ex Nich.
Curved-leaved Golden Moss
Tomentypnum nitens var. falcifolium, Camptothecium nitens var. falcifolium, Homalothecium nitens var. falcifolium
Basis for Former Listing
Tomenthypnum falcifolium was first discovered in the state by G. A. Wheeler in 1977 (Wheeler and Glaser 1982) and it was listed as a special concern species in Minnesota in 1984. Intensive peatland research since then has turned up numerous additional occurrences (Janssens 2010), with nearly as many records as its common putative ancestor, the rich fen species T. nitens (Vitt and Hamilton 1975). It has recently been reported from the Lake Baikal area in Siberia, Inner Mongolia, and far northeast China (Vitt et al. 1990), thus extending its range to circumboreal.
Basis for Delisting
The numerous additional discoveries and the extensive range of T. falcifolium in the Laurentian Mixed Forest Province in northern Minnesota have indicated that this moss is much more common and widespread than originally thought to be. Therefore, T. falcifolium was delisted in 2013.
References and Additional Information
Crum, H. A., and L. E. Anderson. 1981. Mosses of eastern North America. 2 volumes. Columbia University Press, New York, Yew York. 1330 pp.
Faubert, J. 2004. Tomentypnum. Bryophyte Flora of North America, Provisional Publication.
Hedenas, L. 1987. On the taxonomic position of Tomenthypnum Loeske. Journal of Bryology 14:729-736.
Janssens, J. A. 2009. MS Access database on Minnesota bryophytes. Lambda-Max Ecological Research, Minneapolis, Minnesota.
Minnesota Department of Natural Resources. 2012. Statement of need and reasonableness. Minnesota Department of Natural Resources. Division of Ecological and Water Resources. St. Paul, Minnesota. 337 pp.
Vitt, D. H., and C. D. Hamilton. 1975. Taxonomic status of Tomenthypnum falcifolium. The Bryologist 78:168-177.
Vitt, D. H., T. Cao, M. K. Campenot, and R. Gauthier. 1990. The genus Tomenthypnum in north-east China. Journal of Bryology 16:79-87.
Wheeler, G. A., and P. H. Glaser. 1982. Tomenthypnum falcifolium in Minnesota. The Michigan Botanist 21:66.