光脉假毛蕨 guang mai jia mao jue

Plants 40-55(-110) cm tall. Rhizomes short and erect or decumbent, dark brown, sparsely scaly. Fronds clustered; stipes 10-20 cm, bases with sparse lanceolate brown scales and dense acicular hairs, stramineous; laminae narrowly ovate, 15-30 × 5-13 cm, pinnatifid; proximal 2 or 3 pairs of pinnae abruptly reduced and hastate, normal lateral pinnae extremely oblique distally, narrowly lanceolate, 11-13 pairs, alternate, shortly stalked; middle pinnae 5-8 × 1-1.5 cm, bases cuneate, not symmetrical, pinnatifid nearly to narrow wings on both sides of costae, pinnatifid and long caudate at apices; segments 11-15 pairs, ligulate, 5-8 × 2-3 mm, entire, shortly pointed at apices; basal basiscopic segments much smaller than acroscopic ones. Costules raised adaxially, visible abaxially, veinlets not evident, 5-8 pairs per segment, basal acroscopic veinlet reaching bottom of sinus, basiscopic one reaching margin above sinus. Laminae papery when dry, dark brown, both surfaces with dense long acicular hairs along rachises and costae, abaxial sides of costules and margins acicular hairy, adaxial sides of costules appressed shortly hairy. Sori orbicular, attached below middle of veinlets and close to costules, 6-8 pairs per segment; indusia orbicular-reniform, thickly membranous, brown, shortly hairy, persistent.

● Shaded wet rocks or sandy beaches by margins of evergreen broad-leaved forests on slopes; 1300-1500 m. NW Yunnan (Gongshan: Dulongjiang Valley).