Betula papyrifera Marshall

CHICAGO NATURAL HISTORY MUSEUM
VEGETATION SURVEY ALONG
THE ENTERPRISE-MACKENZIE
RIVER HIGHWAY, N. W. T.,
CANADA
June 39	John W. Thieret
1959	Robert J. Reich
4889. Betula papyrifera Marsh.
(var. humilis (Regel) Fern. & Raup)
multiple stemmed., to 10 feet)
infrequent on limestone outcrop area, shallow
residual soil, much exposed rock, assoc, plants:
small trembling aspen, birch, and jack pine;
Rosa, Arctostaphylos uva-ursi, Juniperus horizontalis
and. comruuni s. Amelanchier, Prunus virginiana,
Saxifraga tricuspidata, Galium septentrionale,
Elymus, Cladonia. mile 20.
specimens prepared by the formaldehyde method (see Rhodora 49s 54-60. 1947)
02476928