Flora of North America species comparison

short-creeping to erect, stolons absent.

erect, compact.

monomorphic, evergreen.

3/4–3 times length of blade, base not swollen;

vascular bundles more than 3, arranged in an arc, ± round in cross section.

straw-colored or rarely brown, 1–2 times length of blade, glabrous on both surfaces, base scaly;

scales linear to lanceolate, 3–10 × 0.5–2 mm.

lanceolate to deltate or pentagonal, entire to 1-pinnate-pinnatifid [3-pinnate-pinnatifid], reduced distally to shallowly lobed or hastate apex, herbaceous to papery.

ovate to pentagonal, 1-pinnate or (in small plants) ternately lobed, (12–)20–40(–50) × 14–40(–45) cm.

not articulate to rachis, segment margins entire to sinuate or shallowly lobed;

proximal pinnae not or only slightly reduced, sessile to short-petiolulate, base equilateral or often inequilateral with prominent basiscopic lobe(s);

costae adaxially rounded or shallowly grooved, grooves not continuous from rachis to costae;

indument lacking or of multicellular hairs on costae abaxially, of multicellular hairs on costae adaxially.

1–2(–3) pairs, 12–22 cm, base cordate, margins shallowly lobed, with pair of basal lobes and without proliferous buds in axils.

reticulate, areoles with or without included veinlets.

peltate.

in 1–several rows between midrib and margin, round;

indusia peltate to round-reniform and with narrow sinus, persistent or caducous.

brownish, with inflated folds or wings.

and costae glabrous abaxially.

with included veinlets.

= 40.

= 160.