Flora of North America species comparison

long-creeping, cordlike, 3–6 mm diam.

erect, (3–)5–12 mm diam.

monomorphic, evergreen, 3–6 cm apart, 50–150(–250) cm.

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

croziers often mucilaginous.

straw-colored to tan, 20–125 cm × 3–6 mm, scaleless.

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

30–125 cm, broadest at base, gradually narrowed distally to pinnatifid apex.

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

7–30 × 1–2 cm, incised 1/3–1/2(–3/5) of width;

segments deltate, rounded to acute;

proximal pair of veins from adjacent segments united at acute or obtuse angle below sinus, with excurrent vein 2–4 mm.

round, medial to supramedial;

indusia tan, glabrous to hairy;

sporangia with red- or orange-capped, stalked, globose glands arising from sporangial stalks.

round, medial to submarginal;

indusia tan, glandular, and sparsely hairy.

abaxially of hairs 0.1–0.3 mm on costae and veins, or hairs often lacking, costae also with tan, ovate scales;

veins, costules, and costae adaxially glabrous or sparsely pubescent;

blade tissue without hairs on both sides, or hairy abaxially, usually with red to orange, shiny, sessile, hemispheric glands abaxially.

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.

= 144.

= 58.