State Rank Reason (see State Rank above)
Over 30 collections at MONTU from 7 western Montana counties.
Small plants with long, creeping, scaly rhizomes. Leaves scattered, monomorphic, 3–35 cm long with a petiole shorter than the blade. Leaf blade glabrous, somewhat leathery, lanceolate, once pinnately lobed almost to the rachis, with shallowly toothed or wavy margins. Sori circular, borne midway between midvein and margins of leaf divisions. Indusium absent (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
Moist to wet, usually moss-covered boulders, cliffs; valleys to subalpine. (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)