Flora of North America species comparison

long-creeping, 1.5–3 mm diam.

creeping, 4–8 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, (0.5–)1–3.5 cm apart, (30–)65–140 cm.

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

straw-colored, 15–70 cm × 2–7(–9) mm, at base with scales tan to brownish, linear-lanceolate, hairy at margin.

lanceolate, 14–35 cm, proximal pinnae largest, or lowest pair slightly smaller, blade tapered gradually to pinnatifid apex.

30–70 cm, broadest at or near base, abruptly narrowed distally, apical pinna ± similar to lateral pinnae, 5–17 × 1–3(–5) cm.

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.

(4–)10–22(–28) × (0.3–)0.7–1.5 cm, incised 1/2–3/4 of width;

segments somewhat curved, margins revolute, those at base of proximal pinnae slightly elongate;

proximal pair of veins from adjacent segments running to sinus.

round, medial;

indusia tan, often glandular;

sporangia glabrous.

round, medial to supramedial;

indusia tan, bearing hairs 0.2–0.4 mm;

sporangia glabrous.

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 0.2–0.4 mm on costae, veins, and blade tissue, also of brownish scales 0.6–1.2 mm on costae;

veins and blade tissue glabrous adaxially.

= 128.

= 144.