Flora of North America species comparison

scales spreading, concolored.

scales loosely appressed to spreading, concolored or bicolored with pale margins.

4–15 × 0.5–1.2 dm.

2–22 × 0.3–3.5 dm.

0.2–4 dm, sparsely to moderately scaly;

scales spreading, pale brown to reddish brown, concolored.

0.2–5.4 dm, sparsely to moderately scaly;

scales spreading, reddish to light brown throughout (rarely with pale margins).

glabrous, sparsely to moderately scaly abaxially near costae and adaxially.

sparsely to densely scaly, glabrous or pubescent, hairs mostly on veins and abaxial, pale to light brown, 0.2–0.7 mm.

reniform to horseshoe-shaped, attached at narrow or broad sinus, 1–1.7 mm wide.

circular to horseshoe-shaped, peltate or attached at narrow sinus, 0.8–1.1 mm wide.

absent.

absent.

2.4–16.3 dm, points of pinna attachment 7.3–21 mm apart;

scales moderately spaced, pale to dark brown, essentially concolored or margin indistinctly paler;

hairs absent.

1.8–17 dm, points of pinna attachment 7.5–35 mm apart;

scales moderately spaced, pale brown throughout.

pinnae deltate-oblong, slightly to distinctly falcate, 2.3–7.4 × 0.6–1.8 cm, base truncate to truncate-auriculate or auriculate, occasionally overlapping rachis, acroscopic lobe deltate to acute, margins serrulate, apex acute to deltate;

costae adaxially glabrous.

pinnae narrowly deltate to narrowly elliptic-lanceolate, 2.5–23 × 0.5–2 cm, base cuneate, truncate to auriculate-cordate acroscopically, rounded basiscopically, acroscopic lobe small and oblong or absent, margins biserrate to serrulate, apex attenuate;

costae adaxially glabrous or densely hairy, hairs erect, pale, 0.3 mm.

= 82.