Flora of North America species comparison

short- to long-creeping, 4–8 mm diam.

short-creeping to suberect, 5–10 mm diam.

monomorphic, evergreen, up to 2(–3) cm apart, (15–)50–160 cm.

monomorphic, dying back in winter, crowded, (15–)25–100 cm.

straw-colored, (5–)20–80 × (1–)3–6 mm, at base with brown, linear-lanceolate, hairy scales.

straw-colored to tan above base, 3–20 cm × 2–5 mm, scales on petioles and rachises tan to straw-colored, persistent, ovate to lanceolate.

(9–)30–80 cm, broadest at base, gradually tapered to pinnatifid apex.

elliptic, 25–80 cm, 5–10 pairs of proximal pinnae gradually smaller toward base, lowest pinnae ca. 1 cm, blade tapering gradually to pinnatifid apex.

(2–)8–15(–20) × (0.6–)1–2.5 cm, incised 3/5–4/5 of width;

segments oblong, rounded to acute at apex;

proximal pair of veins from adjacent segments running to sinus, or nearly so.

deeply pinnatifid to ca. 1 mm or less from costa, 3–12 × 1–2 cm;

segments linear to oblong, somewhat oblique and often somewhat curved, entire or crenulate, basal segments of proximal pinnae more often crenulate;

proximal pair of veins from adjacent segments meeting margin above sinus.

round, medial to supramedial;

indusia tan, hairy, hairs 0.2–0.4 mm;

sporangial glands obscure, yellowish, stalked, arising from sporangial stalks.

round, submarginal;

indusia tan, glabrous;

sporangia glabrous.

abaxially of hairs mostly 0.3–1 mm on costae, veins, and blade tissue;

veins adaxially with similar hairs but blade tissue usually without hairs, often with scattered yellowish, stalked glands 0.1 mm.

abaxially of tan to whitish linear scales along costae, hairs lacking or sparse along costae, blade tissue lacking glands or sparsely glandular.

= 144.

= 68.