| Pteridophyte | Literature for Adiantum hispidulum
Palmer, 2003. |
| Pteridaceae | Bibliography |
| Adiantum hispidulum | |
Common name(s): `iwa`iwa, maidenhair ferns, rough maidenhair fern |
| General Information | ||
|---|---|---|
| Distribution | Native to Asia (India to Africa), Australia, and Pacific islands.In the Hawaiian Islands, naturalized on Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Kaho`olawe, Hawai`i. | |
| Habitat | Dry to wet forests in many mesic, open-canopy forest locations | |
| Elevation | 90-1250 m |
|
| Habit |
Terrestrial, stiff, erect; rhizomes erect to decumbent. |
|
| Leaves |
Fronds clustered at apex of rhizome, 6-40(-52) cm long, young fronds rosy pink; stipe dark brown, rough, clothed with short dark fibrils and hairs; blade 2- to 8-pinnate, deltate to ovate, dichotomously branched at 45° angle, each branch in turn repeatedly forking again; rachises hairy and fibrillose; ultimate segments nearly sessile or with asymmetrically attached short stalks, often overlapping, dimidiate, segments oblong-rectangular to diamond-shaped, firm, lower margin entire, upper margin dentate when sterile, both surfaces with fine, short, light hairs; veins mostly ending in marginal teeth. |
|
| Sori |
Sori 6-14 per segment, U-shaped in marginal sinuses; indusial flap with brown hairs. |
|
| Notes |
Latin hispidus, hairy, + ulus, a diminutive suffix, alluding to the fine hairiness of the fern. |
|
| Contributor |
Sally Eichhorn |