Flora of North America species comparison

scales appressed, bicolored with margins transparent.

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

3–25 × 0.3–1.6 dm.

2–22 × 0.3–3.5 dm.

0.4–4.4 dm, moderately to densely scaly;

scales appressed, dark brown with pale margins.

0.2–5.4 dm, sparsely to moderately scaly;

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

sparsely to moderately scaly, hairy abaxially, hairs pale brown, 0.1–0.3 mm.

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

circular to horseshoe-shaped, peltate or attached at narrow sinus, 1.1–1.3 mm wide.

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

absent.

absent.

2.7–20 dm, points of pinna attachment 8–24 mm apart;

scales scattered to dense, brown, margins pale.

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

scales moderately spaced, pale brown throughout.

pinnae narrowly deltate, sometimes elliptic, 3.4–12.3 × 0.6–1.8 cm, base rounded basiscopically, slightly auriculate to truncate acroscopically (latter more common in sterile pinnae), acroscopic lobe acute to oblong, margins biserrate to irregularly serrate to serrulate, apex attenuate and occasionally slightly falcate;

costae adaxially densely hairy, hairs pale, erect, 0.1–0.5 mm.

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.

= 82.