Flora of North America species comparison

erect to obliquely ascending, stolons absent.

monomorphic, evergreen or dying back in winter.

2/3 to equaling length of blade, base not swollen;

vascular bundles more than 3, arranged in an arc, ± round in cross section.

scales brown, linear, 10–20 × 0.8–1.5 mm, lax, not densely tangled or woollike.

lanceolate to deltate, 1–4-pinnate-pinnatifid, gradually reduced distally to confluent, pinnatifid apex, herbaceous.

1-pinnate-pinnatifid, glabrous or pubescent on both surfaces, glandular abaxially and occasionally adaxially, glands pale yellow, ca. 0.5 mm.

4–7 mm wide, margins ciliate.

not articulate to rachis, segment margins nearly entire to crenulate, ciliate;

proximal pinnae not reduced, sometimes basal pair much the longest, sessile to petiolulate, equilateral or inequilateral with basiscopic side more developed (pinnules noticeably longer);

costae adaxially rounded or flat, not grooved;

indument of linear to lanceolate scales and often multicellular glandular hairs abaxially, of multicellular reddish hairs adaxially.

free, simple or forked.

6–10(–15) pairs per segment, unbranched.

in 1 row between midrib and margin, round;

indusia round-reniform, attached at narrow sinus, sometimes small or seemingly absent, persistent or caducous.

medial to supramedial;

indusia present but soon deciduous or completely absent.

brownish, usually spiny, sometimes prominently cristate, rarely finely reticulate.

pinnae 8–18 × 2–3 cm, equilateral, incised more than 3/4 distance to costae.

= 41.