台湾黄腺羽蕨 tai wan huang xian yu jue

Polypodium leuzeanum Gaudichaud, Voy. Uranie, Bot. 361. 1829; Aspidium leuzeanum (Gaudichaud) Kunze; A. rufinerve (Hayata) Hayata; Dryopteris rufinervis Hayata; Pleocnemia cumingiana C. Presl; P. rufinervis (Hayata) Nakai; Tectaria leuzeana (Gaudichaud) Copeland.

Rhizome prostrate; stipe 90-100 cm; rhizome and stipe base scales 2.5-3 cm, ca. 2 mm wide at base, margins conspicuously toothed. Lamina 3- or 4-pinnatifid, 80-90 × ca. 100 cm; basal pinnae largest, ca. 50 × 30 cm, basal basiscopic primary pinnule elongate, ca. 30 cm; pinnules of middle pinnae lobed more than 3/4 toward costules, lobes crenate at margin, sinuses between 2 lobes 3-5 mm wide, with a triangular tooth in each sinus; lamina papery, veins forming in 1 or 2 rows of costal areoles and 1 row of costular areoles, other veins free; costules and veins with yellow glandular hairs on abaxial surfaces. Sori medial, dorsal on free veins; indusia persistent; perispore densely spiny.

Forests; ca. 500 m. N Taiwan [Indonesia, Philippines; W Pacific islands].