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.
Moist to wet vernal pools and ephemeral seepages in the lowland and montane zones; rare in S and EC BC; circumpolar, E to SK, disjunct E to ON, PQ and NF and S to MA, NH, NC, MS, IA, SD, CO, UT, NV and CA; Eurasia.
