Flora of the Hawaiian Islands
Literature for Dryopteris unidentata
Palmer, 2003. Literature for Dryopteris unidentata var. unidentata
Palmer, 2003. Literature for Dryopteris unidentata var. paleacea
Palmer, 2003.
   Dryopteridaceae Bibliography
      Dryopteris unidentata
General Information
DistributionHawaiian Islands.
Terrestrial, large; rhizomes decumbent to erect, up to 60 cm long.
Fronds 1-2 m long; stipe grooved, 30-100 cm long, straw-colored, scales linear-lanceolate to deltate, dark to light brown, mostly at base or covering entire stipe, dense or sparse on upper stipe; blade 3- to 4-pinnate, oblong-lanceolate to oblong-ovate, 34-100 x 25-90 cm, dark green to yellowish green, coriaceous; rachises sparsely to heavily clothed with stiff, dark, deltate to deltate-lanceolate scales; pinnae 10-24 pairs, 10-45 x 6-22 cm, short-stalked, costae with sparse to plentiful scales similar to those on rachises; pinnules stalked to nearly sessile, arising at 90° angle from costae, oblong-lanceolate to oblong-ovate, 3-18 x 1-3 cm, basal pinnules largest; ultimate segments 2-4 mm wide, sessile to short-stalked, mostly lobed, base broadly cuneate, lobe tips broadly obtuse to acute, toothed; veins prominent, free, forked.
Sori marginal, close to sinuses; indusia absent.
Latin unus, one, + dentatus, toothed, in reference to the frequently toothed ultimate segments.
Sally Eichhorn