尖嘴蕨 jian zui jue

Hymenolepis mucronata Fée, Mém. Foug. 5: 82 1852; Acrostichum spicatum Linnaeus f. var. schneideri F. M. Bailey; Belvisia callifolia (Christ) Copeland; B. formosana (Ogata) Ching; B. melanesica Brownlie; B. minor (Copeland) Copeland; B. mucronata (Fée) Copeland; B. vaupelii (Hieronymus ex C. Christensen) Copeland; Hymenolepis callifolia Christ; H. formosana Ogata; H. minor Copeland; H. mucronata f. australiensis C. Christensen; H. mucronata f. graminifolia (Rosenstock) C. Christensen; H. mucronata f. helocharidioides C. Christensen; H. mucronata f. latior C. Christensen; H. mucronata var. nigropunctata C. Christensen; H. spicata (Linnaeus f.) C. Presl var. bakhuizenii Alderwerelt; H. spicata var. graminifolia Rosenstock; H. spicata f. longipaleacea Alderwerelt; H. spicata var. novoguineensis Rosenstock; H. spicata f. schneideri (F. M. Bailey) Alderwerelt; H. spicata var. squamulifera Alderwerelt; H. vaupelii Hieronymus ex C. Christensen; Macroplethus callifolius (Christ) Tagawa; M. mucronatus (Fée) Tagawa; M. vaupelii (Hieronymus ex C. Christensen) Tagawa.

Rhizome shortly creeping, ca. 3 mm in diam.; scales lanceolate, margin long serrate. Fronds rather closely spaced; stipe variable in length, frond subsessile or stipe up to 7 cm; lamina pale brown when dried, sterile lower part narrowly lanceolate, 10-30 × (1-)3-4 cm, herbaceous, both surfaces glabrous, base attenuate and long decurrent, margins entire, apex gradually narrowed into fertile tip 3-12 × 0.1-0.3 cm with slightly recurved margins when dried. Main vein raised on both surfaces, veinlets faintly visible. Sori linear, fully covering abaxial surface of lamina when mature; paraphyses peltate and laterally affixed, stellate, margin denticulate, ca. 0.2 mm in diam.

On tree trunks in forests; 600-1600 m. C and S Taiwan, Yunnan [Bhutan, Cambodia, India, Indonesia, Malaysia, Philippines, Sri Lanka, Thailand, Vietnam; Australia, Pacific islands].