General:
Deciduous perennial, 3-15 cm tall.

Trophophores:
Broadly triangular or egg-shaped, unstalked or short stalked, 1- to 2-pinnate, up to 8 cm long; pinnae to 8 pairs, approximate or overlapping, with entire or slightly lobed margins and rounded tips, the lowest similar in size.

Sporophores:
2-pinnate, about 2 times length of trophophores.

Notes:
The only North American collections of Botrychium boreale Milde have been recently collected in Kootenay National Park, SE BC (W.H. Wagner, pers. comm.). It is difficult to separate from B. pinnatum, but the lowermost pinnae have shallow, narrow sinuses (they are wide and deep in B. pinnatum).

Source:  The Illustrated Flora of British Columbia

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Illustration Source:  The Illustrated Flora of British Columbia

Synonyms and Alternate Names:
Botrychium boreale subsp. obtusilobum (Rupr.) R.T. Clausen
Botrychium boreale var. obtusilobum (Rupr.) Broun