OregonFlora species comparison

shortly creeping and ascending, bearing a crown of deciduous arching monomorphic leaves.

deciduous, monomorphic; to 70 × 15 cm;

leaf bases short and persistent; thick and numerous, forming a nearly continuous layer on the scaly stem.

short and stout, glabrous distally, strongly grooved adaxially; straw-colored;

base darker with sparse scales and small white tubercles;

rachis similar to the petiole.

herbaceous, elliptic, narrowed from the mid-region to the apex and gradually narrowed to the base, pale green;

abaxial surface glandular; pale hairs present on the costae.

linear; to 10 × 2 cm; lowest pinna sometimes less than 1 cm long, deeply and regularly incised;

segments oblong, angled slightly forwards, rounded;

margins plane or slightly recurved; (sub-)entire.

round; borne on veins equidistant between the margin and costa;

indusia thin, reniform.

=54.