岭南鳞盖蕨 ling nan lin gai jue

Davallia matthewii (Christ) Dunn & Tutcher; Microlepia herbacea Ching & C. Christensen.

Plants terrestrial. Rhizome creeping, ca. 3 mm in diam., with red-brown hairs. Fronds distant; stipe brown-straw-colored, ca. 20 cm, ca. 2.5 mm in diam., with short appressed hairs; rachis and rachillae with soft brownish hairs; lamina grass-green when dried, 2-pinnate, broadly lanceolate in outline, ca. 50 × 35 cm, thinly herbaceous, both surfaces glabrous, abaxially with 1 or 2 long hairs on costa, apex caudate; pinnae ca. 20 pairs below pinnatifid apical section, alternate, spreading, stalk ca. 3 cm, lower pinnae obliquely reflexed, middle pinnae 1-pinnate, broadly lanceolate in outline, ca. 20 × 5 cm, base symmetrically subcuneate, apex long acuminate; pinnules ca. 20 pairs, slightly overlapping, almost spreading, subsessile, oblong, ca. 2.5 × 1.2 cm, slightly oblique, base asymmetrical, basiscopically cuneate, acroscopically truncate with small auriculate prominence, parallel with rachis, margin 5- or 6-lobed, distally rounded and coarsely toothed, apex acute or subobtuse. Veins oblique, slender, obscure, pinnate in lobes, 2 or 3 pairs. Sori small, not distinct, at base of notch, terminal on acroscopic veinlet of each group veinlet; indusium light green, small, hemitelioid, glabrous.

Forests, near streams; 500-1000 m. Guangdong, Guangxi, Hunan [Vietnam].