Drynaria roosii Nakaike

Rhizome shortly creeping, 1-2 cm in diam.; scales peltate, 7-12 × 0.8-1.5 mm, margin dentate; fronds dimorphic, glabrous; basal fronds overlapping, sessile, (2-)5-9 × (2-)3-7 cm, base cordate, shallowly lobed to 1/3, abaxially sparsely hairy; foliage fronds stalked, stipe 4-7(-13) cm, conspicuously winged; lamina pinnatifid up to 2-5 mm from costa, 20-45 × 10-15(-20) cm, apex aborted or not; pinnae 7-13 pairs, slightly ascending, lanceolate, 6-10 × (1.5-)2-3 cm, margin obscurely dentate, apex obtuse or acute. Sori in 2-4 rows between costa and margin, 1 row between lateral veins, paraphyses many, glandular. Spores with globules.

Epiphytic or epilithic, often on limestone, or on buildings; at elevations from 100-1,800 metres.