OregonFlora species comparison

shortly creeping, branched;

scales abundant; to about 6 mm long, with thick; dark cell walls and pale yellow-brown lumina, appearing uniformly yellow-brown or chestnut-brown overall;

petiole bases persistent.

few to numerous, loosely clustered; to about 90 cm, herbaceous and pale/mid green, often reddish when young.

long and rather brittle; up to about 60 cm, often longer than the blade; purplish black, scaly and paler at the base; otherwise glabrous or with sparse narrow scales, appearing to branch dichotomously at the base of the blade into (sub)equal branches that resemble the petiole.

rounded/reniform; borne more or less parallel to the ground; length and width subequal or slightly wider than long; to 35 × 40 cm, composed of a pair of pinnate sections each with an arching rachis; first pinna on each section longest and pointing forwards; up to 35 cm, subsequent pinnae shorter and spreading laterally.

oblique, oblong or wedge-shaped up to 3 × 0.6 cm, coarsely divided to about halfway into a maximum of 7 truncate or emarginate segments, purple-black or green;

base narrowed to short (less than 1 mm) stalk.

flap-like, broadly crescent-shaped; up to 3 mm long, green with a pale margin, formed from the reflexed distal mid-section of each lobe margin, often causing the lobe to appear emarginate.

borne on and under the false indusium.

=56.