深裂耳蕨 shen lie er jue

Plants evergreen. Rhizome erect. Fronds 50-80 cm; stipe stramineous, 24-46 cm, ca. 4 mm in diam. at base, with linear dark brown scales and larger scales; larger scales dark brown, lanceolate and narrowly ovate, margins ciliate. Lamina tripinnatifid, deltoid-ovate or narrowly oblong, 40-42 × 12-26 cm at base, base rounded-cuneate or nearly truncate, apex long acuminate; rachis stramineous, without proliferous bulbils, densely scaly abaxially; scales dark brown, linear with dilated base, margins ciliate. Pinnae 17-20 pairs, alternate or nearly opposite, ascendant, shortly stalked, lanceolate, lower pairs 10-16 × 3.5-6.5 cm, bases oblique, acroscopic margins truncate, basiscopic margins broadly cuneate, pinnate, apex slightly ascendant and caudate. Pinnules 14-16 pairs, alternate, slightly ascendant, shortly stalked, lanceolate, 1.5-3 cm × 6-8 mm, basal part obliquely cuneate, apex acute, or acuminate and mucronate; acroscopic bases auriculate, pinnatifid, basal acroscopic pinnule largest, lanceolate, 3-4.5 cm × 4-8 mm; abaxially with few microscales, adaxially glabrous; microscales yellowish brown, filiform with dilated base; lobes oblong, entire or with few inconspicuous small teeth, mucronate; frond texture thinly leathery; venation pinnate on lobes, slightly raised abaxially, slightly concave adaxially. Sori in 1 row on each side of midrib of lobe or midrib of pinnule; indusia present, subentire.

● Broad-leaved evergreen forests; ca. 900 m. W Sichuan (Shimian).