岛生新月蕨 dao sheng xin yue jue

Abacopteris insularis K. Iwatsuki, Acta Phytotax. Geobot. 18: 6. 1959; Cyclosorus insularis (K. Iwatsuki) C. M. Kuo; Thelypteris insularis (K. Iwatsuki) K. Iwatsuki.

Rhizomes long creeping, with dense hooked hairs and sparsely hairy triangular-lanceolate scales. Fronds remote; stipes 10-15 cm, with linear-lanceolate scales at bases; laminae triangular or ovate, 20-35 × 15-25 cm, terminal pinna very large, linear-lanceolate, bases pinnatifid; lateral pinnae 4-7 pairs, lanceolate, bases rounded-obtuse, not symmetrical, apices acuminate; proximal pinnae stalked. Sori orbicular, well separated, attached on middle of veinlets, exindusiate.

Forests; ca. 1000 m. E Taiwan [Japan].