大明山假毛蕨 da ming shan jia mao jue

Plants ca. 64 cm tall. Rhizomes decumbent, dark brown. Fronds clustered; stipes ca. 14 cm, bases brown and sparsely brown scaly, distally stramineous and glabrous; laminae lanceolate, ca. 32 × 23 cm, tapering to both ends, pinnate-pinnatifid; proximal 3 pairs of pinnae gradually reduced and hastate; middle normal pinnae ca. 17 pairs, spreading, alternate, sessile, narrowly lanceolate, ca. 11 × 1.7 cm, pinnatifid; segments ca. 20 pairs, lanceolate, ca. 8 × 3 mm, entire, acute at apices. Veins raised on both sides, ca. 8 pairs of veinlets per segment, proximal pair arising above base of costules, acroscopic veinlet reaching bottom of sinus, basiscopic one reaching margin above sinus. Laminae dark green when dry, thinly papery; abaxially with few fine short hairs along costae and veins and mixed with 1 or 2 setae, adaxially densely long setaceous along rachises and costal grooves, except for few short hairs also with few setae along costae, glabrous on intercostal areas. Sori orbicular, attached on middle of veinlets, 4 or 5 pairs per segment; indusia brown, thick, with fine hairs, persistent.

● Guangxi (Daming Shan).