Prunus pensylvanica L.f.

CHICAGO NATURAL HISTORY MUSEUM
VEGETATION SURVEY ALONG
THE ENTERPRISE-MACKENZIE
RIVER HIGHWAY, N. W. T.,
CANADA
June 28	John W. Thieret
1959	Robert J. Reich
4852* PramiB pengylvanica L.f*
shrub to 2 feet* petals white, leaves glossy*
frequent in limestone outcrop area, sile 12* much bare
rock or shallow residual soil overlying rock, ground
cover plants are Cladonia» Cetraria, Arctostaphylos
uva-ursi. shrubs: Juniperus spp.» -Amelanchier, Ho sa*
herbs; Elyiuiis inaovatus, Galium septentrional*» Draba
lanceolata» Anemone multi fi da.
specimens prepared by the formaldehyde method (see Rhodora 49: 54-60. 1947)
02850553