Counting marmots…
a n n a *The area under discussion in this paper includes the Rocky Mountains in the United States from Glacier National Park, Montana, to the Elk Mountains of Gunnison County, Colorado.The moss flora of this region is diverse and is comprised of arctic, Northern Rocky Mountain (Canadian) and Pacific elements as well as by a number of southern and eastern species.The mosses of this region have not received any cytological attention earlier, although a number of species growing here have been studied from other areas, particularly from the North (Steere, 1954; Anderson and Crum, 1958; Vaarama, 1950) and Pacific West (Steere et al. 1954; Ireland, 1 9 6 5 ).The purposes of this study have been to gather 1 The support of this study by the National Science Foundation (G rant G B -1 5 3 7 ), and by the Committee on Coordination of Research, University of Colorado, is gratefully acknowl edged.I am indebted to
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