滇瓦韦 dian wa wei

Polypodium sublineare Baker ex Takeda, Notes Roy. Bot. Gard. Edinburgh 8: 276. 1915; Lepisorus lancifolius Ching; Pleopeltis sublinearis (Baker ex Takeda) Tagawa & K. Iwatsuki.

Plants 15-25 cm tall. Rhizomes creeping, strong, 1.8-2.5 mm in diam., densely scaly, sometimes becoming naked when old; scales adpressed, lanceolate with broadly ovate base, 2.5-4 × 0.8-1.2 mm, clathrate, thin and brittle, base ovate, margin denticulate, apex long acuminate, lumina large and transparent, isodiametric at base, and oblong at apex. Fronds up to 1 cm apart; stipe straw-colored, (1-)2.5-5.5 cm, 0.8-1.5 mm in diam.; lamina grayish green or brownish on both surfaces when dried, broadly lanceolate, 14-30 × 1.4-5 cm, widest 1/3-1/2 from base, softly leathery, abaxially sparsely scaly; scales lanceolate, transparent, base attenuate, decurrent, apex shortly acuminate; costa raised on both sides, veinlets obscure. Sori on distal half of lamina, midway between costa and margins or nearer costa, orbicular, 3-4 mm in diam.; paraphyses brown, stellate, 0.3-0.35 mm in diam.; lumina transparent.

On tree trunks or rocks in forests; 1800-2500(-3000) m. Yunnan [Bhutan, N India, Nepal, Vietnam].

Lepisorus sublinearis can distinguished by the broadly lanceolate fronds and medial sori. Lepisorus lancifolius is known only from the type specimen from Yangbi and cannot be separated by leaf shape, scales, or paraphyses and so is not accepted.