矮小金星蕨 ai xiao jin xing jue

Aspidium grammitoides Christ, Bull. Herb. Boissier 6: 193. 1898; Athyrium hyalostegium Copeland; Dryopteris glanduligera (Kunze) Christ var. hyalostegia (Copeland) H. Itô; D. grammitoides (Christ) C. Christensen; Lastrea grammitoides (Christ) Copeland; Thelypteris glanduligera (Kunze) Ching var. hyalostegia (Copeland) H. Itô; T. grammitoides (Christ) Ching.

Plants 10-18 cm tall. Rhizomes long creeping, apices including bases of stipes with reddish brown narrowly lanceolate small scales. Fronds approximate; stipes 3-10 cm, dark stramineous, with grayish white fine acicular hairs; laminae lanceolate, 5-8 × 2-3.5 cm, tapering to bases, pinnate-pinnatifid, acuminate and pinnatifid at apices; pinnae 6-8 pairs, alternate, subspreading, lanceolate, bases symmetrical and tapering, rounded-truncate, pinnatifid nearly to costae, apices obtuse or acute; segments 3-5 pairs, obliquely spreading, proximal pair oblong, 2-3 × 1.5-2 mm, entire, rounded at apices; distal segments gradually shortened. Veinlets visible abaxially, simple, 3 or 4 pairs per segment, proximal pair arising above bases of costules. Laminae thickly leathery, dark green when dry, with orange-yellow spherical glands abaxially, costae and costules with sparse glaucous acicular long hairs, adaxially along costal grooves with acicular hairs. Sori small, orbicular, 1-6 pairs per segment, dorsifixed near ends of veinlets, close to margins; indusia horseshoe-shaped, medium-sized, brown, thickly membranous, with more fine and long setae, persistent. Spores bilateral, orbicular-reniform, perispores corrugate, finely reticulate on corrugations.

On rocks in forests; 1000-1400 m. Taiwan [Japan, Korea, Philippines].