Calamagrostis utsutsuensis (Poaceae), a new species endemic to Steens Mountain, Oregon, U.S.A.
DOI:
https://doi.org/10.17348/jbrit.v13.i1.822Abstract
A reedgrass growing on Steens Mountain, Oregon (U.S.A.), is here described as a species, Calamagrostis utsutsuensis Otting & B.L. Wilson. This plant has been confused with C. purpurascens R. Br., C. koelerioides Vasey, and C. tacomensis K.L. Marr & R.J. Hebda. An identification key is provided to distinguish the Steens Mountain plant from these species and from all other Calamagrostis of the Pacific Northwest and northern Great Basin.
References
Brown, J.H. 1978. The theory of insular biogeography and the distribution of boreal birds and mammals. Great Basin Naturalist Mem. 2:209–228.
Green, C.W. 1980. The systematics of Calamagrostis (Gramineae) in eastern North America. Ph.D. dissertation, Department of Biology, Harvard University, Cambridge, Massachusetts, U.S.A.
Heald, W.F. 1951. Sky islands of Arizona. Nat. Hist. 60:56–63, 95–96.
Hitchcock, C.L. & A.J. Cronquist. 2018. Flora of the Pacific Northwest: An illustrated manual, 2nd Ed. D.E. Giblin, B.S. Legler, P.F. Zika, & R.G. Olmstead, eds. University of Washington Press, Seattle, U.S.A.
Mansfield, D.H. 2000. Flora of Steens Mountain. Oregon State University Press, Corvallis, Oregon, U.S.A.
Marr, K.L., R.J. Hebda, & C.W. Greene. 2007. Calamagrostis Adans., In: M.D. Barkworth, K.M. Capels, S. Long, L.K. Anderton, & M.B. Piep, eds. Magnoliophyta: Commelinidae (in part): Poaceae, part 1. Flora of North America north of Mexico, Vol. 24. Oxford University Press, New York and Oxford, U.S.A. and UK. 24:706–732.
Marr, K.L. & R.J. Hebda. 2006. Calamagrostis tacomensis (Poaceae): A new species from Washington and Oregon. Madroño 53(3):288–298.
Marr, K.L., R.J. Hebda, & E.A. Zamluk. 2011. Morphological analysis and phytogeography of native Calamagrostis (Poaceae) from British Columbia, Canada, and adjacent regions. Madroño 58(4):214–233.
Thiers, B. [continuously updated]. Index Herbariorum: A global directory of public herbaria and associated staff. New York Botanical Garden, Bronx, New York, U.S.A. http://sweetgum.nybg.org/science/ih/.
