Adiantum hispidulum

Adiantum hispidulum Sw.

Family : Pteridaceae

Terrestrial herb with erect rhizome, 2-3 x 2-2.5 cm. Scales 2.5-3 x 0.5 mm, lanceolate, acuminate, pale brown. Fronds 20-30 x 10-15 cm, dichotomously branched, 4 or 5 times; stipe 10-15 cm long, dark brown to black, hispid; pinnae 2-10 cm long, pinnules 1 x 0.6-0.8 cm, dimidiate, obovate, elliptic or rhomboid, shortly stipitate, truncate to cuneate at base; sterile pinnae serrate, fertile pinnae serrate to lobed; hispid coriaceous. Sori along the reflexed margins, reniform, 1 x 1 mm, dark brown to black. Sporangial capsule 250 x 125 µm, subglobose, stalk 125 µm long. Spores 37.5 x 37.5 µm, yellow, trilete, tetrahedral.