Description from Flora of China
Dictyocline griffithii T. Moore var. tenuissima Ching.
Plants ca. 50 cm tall. Rhizomes short and ascending, with dense reddish brown setaceous lanceolate scales and grayish white acicular hairs. Fronds clustered; stipes ca. 20 cm, stramineous, with sparse acicular hairs, with 1 or 2 scales on bases; laminae narrowly oblong, 26-30 × 12-14 cm, not narrowed to bases, 1-pinnate, acuminate at apices; lateral pinnae 4-6 pairs, opposite, almost sessile, spreading, proximal pair not reduced, broadly lanceolate, 7-8 × ca. 2 cm, rounded at bases, entire or ± undulate, acuminate at apices; terminal pinna particularly large, bases decurrent, margins pinnatifid, apices acuminate; proximal segments of similar shape as lateral pinnae. Costae raised on both sides and with acicular hairs, veinlets evident, oblique distally, veinlets reticulate between veinlets, areoles in 2 rows, subtetragonal, without included veinlets. Laminae papery, grass-green when dry, abaxial surface with acicular setae along veins, adaxially glabrous or with 1 or 2 short sparse hairs along veins. Sori sparsely attached along veins.
● Shaded wet places in valleys or forests; 300-900 m. Fujian, Jiangxi, Zhejiang.