Flora of North America species comparison

usually long-creeping, 1.5–2.5 mm diam.

erect, (3–)5–12 mm diam.

monomorphic, dying back in winter, mostly evenly spaced 1 cm or more (sun-gathering leaves in loose cluster), (25–)40–85 cm.

monomorphic, evergreen, clustered, (15–)25–100(–135) cm;

croziers often mucilaginous.

straw-colored, 4–25 cm × 1–3 mm, at base with scales tan to reddish brown, ovate, glabrous.

straw-colored, 2–15(–25) cm × 1–4(–6) mm, at base with brownish, ovate-lanceolate, ± glabrous scales.

elliptic, 15–60 cm, proximal 4–10 pinna pairs gradually smaller toward base (smallest often less than 5 mm), blade tapering gradually to pinnatifid apex.

to 110 cm, proximally with 6–12 pairs of smaller pinnae, distally tapering gradually to a pinnatifid apex.

deeply pinnatifid to within 1 mm of costa, 3–9(–13) × 1–2(–2.5) cm;

segments oblong to linear, somewhat oblique, entire to crenulate;

proximal pair of veins from adjacent segments meeting margin above sinus.

round, supramedial;

indusia tan, often ciliate;

sporangia glabrous.

round, medial to submarginal;

indusia tan, glandular, and sparsely hairy.

abaxially of moderately to densely set hairs to 1 mm on rachises, costae, and veins, glands lacking or yellowish to light orangish, mostly sessile on blade tissue;

blades adaxially often with hairs on veins.

abaxially of hairs 0.2–0.5 mm on rachises, costae, and sometimes veins and blade tissue, also of numerous glands, these yellowish to often reddish, resinous, shiny, sessile, hemispheric;

blade tissue adaxially glabrous or sparsely hairy.

pinnae hastate or auriculate;

longest (medial) pinnae 2–14(–20) × 0.4–2.5 cm, incised to within 1 mm of costa;

segments 2–3 mm wide, strongly oblique and somewhat curved;

veins meeting margin above sinus.

= 54.

= 58.