Coefficient of Conservatism:
Coefficient of Wetness:
CANADIAN ST. JOHN'S-WORT
R. W. Smith
Moist sandy shores and excavations (“borrow pits”); peaty bog margins and disturbed trails; mostly in sandy or peaty acid soils.
Depauperate plants of the much more common H. majus, such as seedlings blooming the first year, may resemble this species and are often thus misidentified. The sepals of H. majus attain a greater length, especially in fruit. Both species have very reduced, subulate ultimate bractlets in the inflorescence, as in H. mutilum.