线羽假毛蕨 xian yu jia mao jue

Plants more than 1.6 m tall. Rhizomes not seen. Stipes ca. 30 cm, bases dark brown, distally stramineous, glabrous; laminae lanceolate, ca. 140 × 40 cm, pinnate-pinnatifid, pinnatifid-acuminate at apices; proximal 9 pairs of pinnae abruptly reduced into auricles, middle normal pinnae more than 30 pairs, alternate, obliquely spreading, sessile, linear-lanceolate, ca. 20 × 2.3 cm, not broadened at bases, pinnatifid, pinnatifid-acuminate at apices; segments ca. 40 pairs, ligulate, 9-11 × ca. 5 mm, acute at apices. Veins not evident, ca. 12 pairs of veinlets per segment, proximal pair reaching bottom of sinus. Laminae dark green when dry, herbaceous; abaxially setaceous along rachises, glabrous along costae, veins densely glandular, adaxially densely setaceous along costal grooves, with 1 or 2 setae on veinlets, with few fine hairs along costules. Sori orbicular, attached on middle of veinlets; indusia orbicular-reniform, brown, thick, persistent, glabrous.

● Mixed forests by streams; ca. 900 m. Sichuan (Emei Shan).

Pseudocyclosorus linearis is similar to P. esquirolii but differs in the pinnae linear-lanceolate and the proximal pair of veinlets on segments reaching bottom of sinus.