假边果鳞毛蕨 jia bian guo lin mao jue

Aspidium dilatatum Smith var. patuloides Christ.

Plants up to 90 cm tall. Rhizome creeping, stout, clothed with ovate-lanceolate, brown scales. Fronds approximate; stipe brown or dark brown basally, ca. 30 cm, 4-8 mm in diam., clothed with ovate-lanceolate or lanceolate, entire, brown scales and fibrillose scales, glabrous upward; lamina broadly deltoid-lanceolate, ca. 60 × 40 cm, tripinnate, base not narrowed, apex acuminate; pinnae 6-8 pairs, oblique, broadly lanceolate, widest at base, long stalked, apex acuminate, basal pinnae with stalk 2.5-3 cm; pinnules 9-12 pairs, lanceolate, base with short stalk, apex bluntly acuminate; basal pinnules largest, 8-10 × ca. 2.5 cm, basalmost pinnule with ca. 0.5 cm stalk, segments narrowly elliptic, ca. 1.5 × 0.6 cm, adnate to costule, apex bluntly acuminate, deltoid-serrate. Lamina thinly leathery, glabrous on both surfaces; costa sparsely linear-lanceolate scaly, densely scaly at base of pinnule axis; lateral veins pinnate, mostly forked, slightly distinct adaxially, conspicuous abaxially. Sori 1 on each segment; indusia brown, orbicular-reniform, entire, persistent. Spores ca. 64 within sporangium.

Quercus forests; 2100-2300 m. SE Xizang, C Yunnan [Bhutan, India, Kashmir, Myanmar, Nepal].