竹叶蕨科 zhu ye jue ke
Dr. Dong Shiyong
Terrestrial. Rhizome creeping, the apex covered with dark, rigid bristles; bristles with a single row of cells at apex and a few rows of cells at base. Fronds monomorphic or dimorphic. Stipes with 1, 2, or 4 vascular bundles near at base, adaxially grooved. Lamina simple or 1-pinnate, with terminal pinnae similar to lateral ones; pinnae simple, entire, chartaceous to coriaceous, glabrous; veins reticulate, areoles without included free veinlets. Sori linear and forming a narrow longitudinal band between midrib and edge, or irregularly borne along veins, or converging to round or oblong sori, or in long inframarginal sulcules, or acrostichoid on abaxial surface of contracted fertile pinnae, exindusiate; paraphyses abundant, multicellular. Spores trilete, tetrahedral-globose, with tubercles or rodlets. n = 44, 108, 110, 114.
One genus and about 15 species: from Sri Lanka and southern India to southern China, through Malaysia and Indonesia to northern Queensland and Fiji; one species in China.
The taxonomic state and position of this group are disputed. Ching (1978) treated it as a family and thought it related to Lindsaeaceae. In later other systems, it was treated as a genus related to Syngramma J. Sm. within Ptridaceae.
1. TAENITIS Willd. ex Spreng., Anleit. Kennt. Gew. 3: 374. 1804
竹叶蕨属 zhu ye jue shu
The morphological characters and geographic distribution are the same as those of the family.
15 species, one in China (Hainan).
1. Taenitis blechnoides (Willd.) Sw., Syn. Fil. 24, 220. 1806.
竹叶蕨 zhu ye jue
Rhizome long-creeping, 1--2 mm in diam., bristles present at apex; bristles dark brown, stiff, 2--3 mm long. Fronds distant, 2--4 cm apart. Stipes 40--70 cm long, adaxially grooved, castaneous at base, stramineous or brown upwards, glabrous. Lamina slightly dimorphic, 20--40 X 20--30 cm, 1-pinnate with 3--8 pairs lateral pinnae, chartaceous to coriaceous, glabrous; sterile pinnae 15--25 X 2.5--4 cm, lanceolate or linear-lanceolate, shortly stalked, entire at margin, acuminate at apex, narrowly cuneate at base; fertile pinnae narrower, 13--25 X 1.2--3 cm; costae distinctly raised on abaxial surface, flat or slightly sunken on adaxial surface. Veins well reticulate without included veinlets. Sori linear and forming a narrow longitudinal band between midrib and edge, rarely interrupted, 1--1.5 mm in breadth, exindusiate.
Terrestrial in forests; 400--1000 m. Hainan [Cambodia, India, Indonesia, Laos, Malaysia, Sri Lanka, Thailand, Vietnam; Pacific Islands].
List of Chinese names in Taenitidaceae
竹叶蕨 zhu ye jue
竹叶蕨科 zhu ye jue ke
竹叶蕨属 zhu ye jue shu