Flora of the Hawaiian Islands
Pteridophyte Literature for Athyrium microphyllum
Palmer Palmer, 2003.
   Athyriaceae Bibliography
      Athyrium microphyllum

Common name(s): `akolea
General Information
DistributionHawaiian Islands.In the Hawaiian Islands, endemic to Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i.

Athyriaceae - Athyrium microphyllum Athyriaceae - Athyrium microphyllum

Click here for detailed USGS map by Jonathan Price
HabitatMesic to wet forests
Elevation500-2320 m
Terrestrial, medium-sized; rhizomes forming small caudices, erect, 15-30 cm tall.
Fronds herbaceous, 25-90 cm long, forming rosettes at tips of rhizomes; stipe straw-colored to pale brown, base thickened, scales at bases sparse, linear-lanceolate, reddish brown; blade 3-pinnate-pinnatifid to 4-pinnate, ovate or ovate-oblong, dark green; pinnae alternate, stalked; costae and costules bearing short, white, fleshy, translucent spines, up to 1 mm long, at bases on adaxial surface; ultimate segments sessile to short-stalked, up to 2 mm long, 0.3-1.5 mm wide, bases wedge-shaped, uneven-sided with 2 to several deeply cut, toothed lobes.
Sori short, linear, 1-2 mm long, at base of each ultimate segment close to midribs and sinuses, on only one side o veins; indusia firm, opening toward costules.
Greek mikros, small, + phyllon, leaf, in reference to the small ultimate segments.
Nancy Khan