Warnstorfia pseudostraminea
Ann. Bot. Fenn. 16: 223. 1979.
Plants green, yellow-green, or brownish. Stems with axillary hair distal cells 1–3. Stem leaves narrowly ovate-triangular or ovate, almost straight, slightly falcate, or rarely strongly falcate, concave; margins ± entire or finely denticulate; apex obtuse, acuminate, or blunt, incurved; costa ending 2/3–4/5 leaf length; alar region isodiametric or sometimes transversely triangular, supra-alar cells large, forming oval or rectangular region with alar cells along basal margin.
Habitat: Mineral-poor and acid habitats (disturbed), slightly sloping poor fens, ditches, periodically water-filled depressions
Elevation: low to high elevations (0-2200 m)
Distribution
Greenland, B.C., Nfld. and Labr., Ont., Alaska, Calif., Minn., Wash., Wyo., s South America, Europe, Pacific Islands (New Zealand), Subantarctic Islands.
Discussion
Warnstorfia pseudostraminea is usually readily recognizable in the field, where the species gives an impression of an intermediate between W. fluitans and Straminergon stramineum. The species, which is never red, could be confused with 1. W. fluitans or green plants of Sarmentypnum exannulatum, and the distinguishing characters of these species are given in their respective discussions. The genus Calliergidium, in which W. pseudostraminea has been placed, is discussed under Drepanocladus (Amblystegiaceae).
Selected References
None.