棱脉蕨 leng mai jue

Polypodium persicifolium Desvaux, Ges. Naturf. Freunde Berlin Mag. Neuesten Entdeck. Gesammten Naturk. 5: 316. 1811; Goniophlebium grandidens (Kunze ex Mettenius) Fée; G. ponapense Copeland; G. rotense Hosokawa; P. colpothrix Kunze; P. grandidens Kunze ex Mettenius; P. integriore Copeland; P. koningsbergeri Alderwerelt; P. persicifolium var. mettenii Rosenstock; P. phlebodioides Copeland; Schellolepis persicifolia (Desvaux) Pichi Sermolli.

Rhizome green or brown, 5-7 mm in diam., densely scaly; scales dark brown, ovate-lanceolate, 3-4 × 1.5-2 mm, margin toothed. Stipe straw-colored or brownish, 30-40 cm, 3-4 mm in diam., densely scaly at base, distally minutely scaly or glabrescent upward. Lamina broadly lanceolate in outline, up to 150 × 40 cm; lateral pinnae 10-30 pairs, ascending, 4-5 cm apart, ± falcate, linear-lanceolate, up to 20 × 2.5 cm, cuneate at base, with 5-7 mm stalks, margin toothed and cartilaginous, apex caudate-acuminate; pinnae gradually smaller distally, terminal pinna same as lateral pinnae, up to 15 cm; lamina herbaceous or subleathery, green, glabrous. Sori orbicular, borne on simple included veinlets in costal areoles, in 1 row on each side of costa, medial or costular, distinctly sunken on abaxial surface and raised on adaxial surface.

Epiphytic on tree trunks; 700-1000 m. Hainan (Baoting, Diao- luo Shan, Jianfeng Ling) [SE India, Indonesia, Malaysia, New Guinea, Philippines, Thailand, Vietnam; Pacific islands].

Beddome (Ferns Brit. India, 79, t 79. 1865) treated material of this taxon as Goniophlebium cuspidatum (D. Don) C. Presl.