Flora of North America species comparison

scales spreading, concolored.

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

2.5–10.7 × 0.3–0.7 dm.

2–22 × 0.3–3.5 dm.

0.3–2 dm, moderately to densely scaly;

scales spreading, pale brown throughout.

0.2–5.4 dm, sparsely to moderately scaly;

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

lacking scales, glabrous (rarely with a few branched hairs abaxially).

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

reniform to lunate or deltate-rounded, attached along broad sinus, 1.1–1.7 mm wide.

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

present or absent.

absent.

2.2–9 dm, points of pinna attachment 5–12 mm apart;

scales moderately spaced to dense, pale to dark brown, point of attachment distinctly darker.

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

scales moderately spaced, pale brown throughout.

pinnae oblong to lanceolate-oblong, straight to slightly falcate, 0.9–5 × 0.4–0.9 cm, base auriculate-cordate, acroscopically overlapping rachis, acroscopic lobe deltate, margins entire to serrulate to smoothly crenate, apex acute to bluntly rounded;

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.

= 82.