Caltha palustris L.

CHICAGO NATURAL HISTORY MUSEUM
VEGETATION SURVEY ALONG
THE ENTERPRISE*MACKENZIE
RIVER HIGHWAY, N. W. T.,
CANADA
June 28
John W. Thieret
Robert J. Reich
UB66. Caltha pal us tr is L*
petals yellow; stems hollow*
in marshy area along cold, clear, fast-moving stream*
woody vegetation Immediately adjacent to stream is
Alnus, Cornus, and Populus balsamifera, but beyond
this is typical jack pine—white spruce forest*
mile 16«
specimens prepared by the formaldehyde method (see Rhodora 49: 54-60. 1947)
02743910