Common Name:
ALDER-LEAVED BUCKTHORN
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Coefficient of Conservatism:
8
Coefficient of Wetness:
-5
Wetness Index:
OBL
Physiognomy:
Nt Shrub
B. S. Walters
Fens, openings in tamarack and cedar (also sometimes spruce) swamps, peaty streamside thickets, interdunal swales, sedge marshes and mat, sometimes in wet, open deciduous forests, rocky openings and outcrops; generally a calciphile and a good indicator of fens.
The leaf blades are of similar proportions to those of R. cathartica, but are more acute, may average a little larger, and have more pairs of lateral veins. These are strongly ascending and curve along the margins, much as in leaves of Cornus (which, however, are strictly entire).