Volume 3 > Part 1 > Year 1979 > Page 17–18 > Selaginellaceae > Selaginella

3. Selaginella biformis A.Braun ex Kuhnwfo-0001125302

Forsc. Gaz. 4 Bot. 6: 17, 19. 1889; Alston in Fl. Indo-Chine 7(2): 570. 1951; Tagawa & K.Iwats., S.E. Asian Stud. 5: 30. 1967 Fig. 2: 6–8.

Accepted Name : This is currently accepted.

Description : Stems erect or decumbent, rooting only at base for the erect plants, plants about 25 cm tall; main stems about 2 mm in diameter near base, sparsely bearing leaves, pubescent on lower surface or glabrescent in lower portion; lateral branches bipinnate to tripinnate, densely pubescent below; ultimate branches about 3 mm in breadth; runners branching from the main stems, rooting and forming new erect plants at the apex, bearing rhizophores throughout. Leaves on basal portion of erect stem uniform, sparse and not imbricate; ventral leaves ascending, oblong subdeltoid, gradually narrowing and falcate towards acute apex, cordate at base, 2–3 mm long, 0.7–1.5 mm broad; edges dentate or ciliate near base, texture herbaceous to softly papyraceous, green; dorsal leaves asymmetrically oblong, mucronate at apex, dentate or ciliate at margin. Spikes about 1 mm in diameter; sporophylls uniform, ovate subtriangular with long mucronate apex, about 1.5 mm long, 1 mm broad.

Thailand : NORTHERN: Chiang Rai, Chiang Mai (Doi Phu Pa, Huai Tong), Nan (Pha Sing), Phrae (Mae Sai), Phitsanulok (Thung Salaeng Luang, Salaeng Haeng), Tak (Ban Musoe); NORTH-EASTERN: Phetchabun (Phu Miang, Pine Grove), Loei (Phu Luang, Phu Kradueng); EASTERN: Nakhon Ratchasima (Si Khio); CENTRAL: Nakhon Nayok (Khao Yai).

Distribution : Assam, Burma, S China, Indochina and Malesia throughout (type from the the Philippines).

Ecology : Terrestrial on rather dry ground or on humus rich floor or dense forests in light shade at 500–1,200 m alt.

Vernacular : Foen phaeng (เฟินแผง)(Northeastern).