OregonFlora species comparison

slender, white pruina often present;

scales dense, brown, lanceolate, toothed or entire;

taste acrid/bitter.

stout, white-pruinose, densely clothed in scales;

scales brown, longtoothed;

margins often pale;

taste bland.

to 30 × 5 cm;

petiole slender; to 12 × 0.1 cm.

to 60 cm;

petiole to 25 × 0.2 cm.

oblong to narrowly ovate; pinnatifid, slightly leathery; up to 18 × 5 cm, glabrous above;

scales on abaxial rachis sparse, brown; less than 6 cells wide.

pinnatifid, narrowly ovate; stiff and leathery, dark green; to 35 × 8 cm, with relatively few pairs of robust pinnae;

adaxial surface glabrous;

scales on abaxial surface scattered; broad; convex, brown, with pale margins.

small, oblong; to 2.5 × 1 cm;

margin entire to serrulate;

apex rounded to acute;

veins free.

oblong; up to 9 × 2 cm;

margin usually subentire;

apex rounded to acute; some veins anastomosing, forming indistinct areolae along the pinnae.

rounded; less than 3 mm, often oval when immature;

sporangiasters absent; but aborted purplish sporangia often present.

round; large; over 3 mm, often absent on proximal pinnae;

sporangiasters absent.

=148.

=74.