羽叶新月蕨 yu ye xin yue jue

Meniscium parishii Beddome, Ferns Brit. Ind. t. 184. 1866; Abacopteris triphylla (Swartz) Ching var. parishii (Beddome) Ching; Cyclosorus parishii (Beddome) Tardieu; M. triphyllum Swartz var. parishii (Beddome) Beddome; Pronephrium triphyllum (Swartz) Holttum var. parishii (Beddome) Nakaike; Thelypteris triphylla (Swartz) K. Iwatsuki var. parishii (Beddome) K. Iwatsuki.

Plants 30-50 cm tall. Rhizomes long creeping, blackish brown, with dense white hooked short hairs and brown hairy lanceolate scales. Fronds monomorphic or dimorphic; stipes 10-40 cm, dark stramineous, bases with sparse scales and throughout with dense hooked hairs; laminae ovate-triangular, 25-30 × 10-15 cm, long acuminate at apices; lateral pinnae 2-5 pairs (fertile laminae sometimes ternate), oblique distally, subopposite, oblong-lanceolate; proximal pair of pinnae longest, 6-15 × 2-3 cm, stalk 1-2 mm, rounded or rounded-cuneate at bases, entire, shortly acuminate at apices; distal pinnae adnate to rachises and decurrent; terminal pinna ca. 20 × 3-4 cm, margins undulate, usually with 1 or 2 free small auricles at bases, acuminate at apices. Veins evident abaxially, veinlets obliquely spreading and parallel, in middle of lateral pinnae usually 8 or 9 pairs, oblique or spreading, veinlet pairs joining by theirs ends and forming triangular areoles, an excurrent veinlet arising from joining point connected with veinlets of others forming subsquare areoles. Laminae firmly papery, adaxially glabrous except for dense hooked hairs in costal grooves, abaxially with hooked hairs along costae and veinlets and also with scattered hooked hairs on intercostal areas. Sori attached on veinlets, orbicular when young, becoming narrowly ovate and confluent, exindusiate; sporangia each with 2 hooked hairs.

Forests; 200-500 m. Taiwan [S India, Japan, Malaysia, Myanmar, Sri Lanka].