General:
Deciduous perennial, 0.5-7 cm tall.
Trophophores:
Oblong to widely triangular, unstalked or narrowed into short stalks, usually simple; pinnae usually overlapping, up to 1.5 cm long, pinnules usually entire or shallowly lobed.
Sporophores:
1-pinnate, 1-8 times length of trophophores.
Synonyms and Alternate Names:
Botrychium simplex subsp. simplex
Botrychium simplex subsp. typicum R.T. Clausen
Botrychium simplex var. compositum (Lasch) Milde
Botrychium simplex var. laxifolium (R.T. Clausen) Fernald
Botrychium simplex var. tenebrosum (A.A. Eaton) R.T. Clausen
Botrychium tenebrosum A.A. Eaton