狭叶金星蕨 xia ye jin xing jue

Aspidium angustifrons Miquel, Ann. Mus. Bot. Lugduno-Batavi 3: 178. 1867; Athyrium cystopteroides D. C. Eaton var. elatus D. C. Eaton; Lastrea miqueliana Tagawa; Thelypteris angustifrons (Miquel) Ching.

Plants 25-35 cm tall. Rhizomes long creeping, apices including stipe bases with sparse dark brown lanceolate thick scales. Fronds approximate; stipes 10-15 cm, stramineous, subglabrous, distal parts and rachises more grayish white pubescent; laminae lanceolate, 15-20 × 3-4 cm, slightly tapering to bases, pinnate-pinnatifid or subbipinnate, acuminate and pinnatifid at apices; pinnae 10-15 pairs, alternate, spreading, sessile or very shortly stalked, proximal pair of similar shape but slightly shorter than distal ones; middle pinnae lanceolate, 2-3 × ca. 1 cm, bases ± symmetrical, truncate, pinnatifid nearly to costae or subpinnate, apices obtuse or acute; segments or pinnules 6-20 pairs, proximal 2 or 3 pairs usually free, proximal pair of pinnae larger, oblong, 4-5 × ca. 2 mm, bases cuneate, slightly adnate to costae, margins entire or thickly serrate, apices obtuse; distal pairs gradually reduced. Veinlets evident abaxially, simple, 3 or 4 pairs per segment. Laminae herbaceous, when dry dark green, with orange-yellow spherical glands abaxially, with few acicular hairs along costae and costules, adaxial sides with sparse acicular short hairs along grooves. Sori orbicular, medium-sized, 3 or 4 pairs per segment, dorsifixed at distal parts of lateral veins, close to margins; indusia orbicular-reniform, medium-sized, brown, membranous, with more setae, persistent.

On rocks in forests or on forest floor; 200-1100 m. Fujian, Taiwan [Japan].