Eksplorasi Pteridophyta di Kawasan Hutan Telagah Taman Nasional Gunung Leuser

Abstract

Research has been conducted to determine fern species in Telagah forest, Gunung Leuser National Park. Identification of fern species was based on morphological characteristics such as habit, habitat, stature of rhizome, stature of roots, stipe, enthal (form, tip, base, edge, texture, surface and color of enthal) and sorus (arrangement and colour). The result showed there were 56 fern species, belonging to two classes, nineteen families and thirty four genera. Of total 56 species, forty were categorized as terrestrial fern, eleven species were epiphytes and five species were both habits. The most dominan species were member of Polypodiaceae and Athyriaceae with total of 11 and 9 species, respectively. Overall, species were found within altitude from 1060-1190 metre above sea level, with air humidity of 78-90%, and light intensity of 120-224 Cd.