Flora of North America species comparison

long-creeping, 1.5–3 mm diam.

erect, (3–)5–12 mm diam.

monomorphic, dying back in winter, often 1 cm or more apart, fertile leaves often somewhat longer than sterile leaves, 25–80 cm.

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

croziers often mucilaginous.

straw-colored above base, 12–45 cm × 1–3 mm, at base sparsely set with tan, ovate, glabrous scales.

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

lanceolate, 14–35 cm, proximal pinnae largest, or lowest pair slightly smaller, blade tapered 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 ca. 1 mm from costa, 3–10 × 1–2 cm;

segments oblong, somewhat oblique, entire;

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

round, medial;

indusia tan, often glandular;

sporangia glabrous.

round, medial to submarginal;

indusia tan, glandular, and sparsely hairy.

abaxially of sparsely set hairs 0.2–0.4 mm primarily on costae, also of yellowish short-stalked glands less than 0.1 mm, blade tissue with numerous reddish to orangish, resinous, shiny, sessile, hemispheric glands;

blades adaxially with scattered 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.

= 128.

= 58.