Flora of North America species comparison

short- to long-creeping, 4–8 mm diam.

short-creeping, 4–10 mm diam.

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

monomorphic, evergreen, ca. 65–200 cm or more.

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

tan, (25–)40–120 cm × 4–10 mm, at base with scales absent or ephemeral.

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

40–100 cm or more, gradually reduced distally with lanceolate apical pinna that is 1/4 to equaling longest lateral pinna;

buds sometimes present at base of proximal pinna.

(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.

lanceolate, 15–25 pairs, (10–)15–25 × (1.5–)2.5–3.5(–4.5) cm, rounded to truncate at base, margin hooked-serrate;

main lateral veins of fertile pinnae 3–5 per cm, with rows of 10–18 areoles between costa and margin, cross-veins somewhat curved.

round, medial to supramedial;

indusia tan, hairy, hairs 0.2–0.4 mm;

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

oblong-arcuate, uniseriate between main lateral veins on cross-veins, often appearing confluent at maturity;

indusia lacking;

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 spreading, irregularly crimped hairs ca. 0.2–0.3 mm on costae and sometimes veins adaxially;

blades glabrous adaxially.

= 144.

= 72.