双柏假毛蕨 shuang bai jia mao jue

Plants ca. 90 cm tall. Rhizomes creeping. Fronds remote; dimorphic; fertile stipes to 43 cm, stramineous, sparsely brown scaly and glabrous; laminae oblong-lanceolate, ca. 50 × 18 cm, proximal 1 or 2 pairs of pinnae slightly shortened, pinnate-pinnatifid, acuminate at apices; lateral pinnae ca. 20 pairs, spreading, alternate, subsessile; middle pinnae narrowly lanceolate, ca. 9 × 1.4 cm, not narrowed to bases, pinnatifid, pinnatifid and long caudate-acuminate at apices; segments ca. 25 pairs, lanceolate, slightly bent, ca. 4 × 3 mm, entire, obtuse-pointed at apices; sterile fronds smaller, proximal 4 pairs of pinnae abruptly reduced into auricles. Veins evident on both sides, 7 or 8 pairs of veinlets per segment, proximal pair arising from above base of costules, acroscopic veinlet reaching bottom of sinus, basiscopic one reaching margin above sinus. Laminae dark green when dry, papery; rachises and costae with dense acicular hairs on both sides, acicular hairy on veins and abaxial surface of intercostal areas, adaxially occasionally with 1 or 2 acicular hairs and glabrous on intercostal areas, shortly setaceous along margins. Sori orbicular and attached below middle of veinlets and close to costules, 7 or 8 pairs per segment; indusia brown, membranous and hairy, persistent.

● Evergreen broad-leaved forests; ca. 2100 m. Yunnan (Shuangbai).