|Pteridophyte|| Literature for Tectaria gaudichaudii
Common name(s): `iwa`iwa lau nui
|Distribution||Hawaiian Islands.In the Hawaiian Islands, endemic to Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i.|
|Habitat||Moist, shady valleys and gulches|
||Terrestrial, medium-sized to large; rhizomes decumbent.
||Fronds 30-140 cm long, clustered, stipe glossy, mahogany brown or purple, scaly only at base, scales scattered, lanceolate brown, blade 1-pinnate-pinnatifid to bipinnatifid, deltate, dark green; rachises becoming winged distally, tips finally becoming deeply pinnatifid with sinuate, lanceolate lobes separated by broad angular sinuses, membranous; pinnae 3-10 pairs below pinnatifid blade tips, nearly opposite, lanceolate, pinnae at bases short-stalked, becoming adnate distally, deeply pinnatifid, adaxial costae and major veins densely covered with stubby, multicellular usually obtuse-tipped hairs; ultimate segments deeply crenulate to lobed; veins prominent, anastomosing freely to form areoles with occasional included veinlets, areoles adjacent to pinna costae long, linear,
||Sori arranged in lines near veins leading to crenulate lobes, mostly on included veinlets; indusia kidney-shaped.
||Name honors Charles Gaudichaud-Beaupre (1789-1854), French pharmaceutical botanist on Capt. Louis Claude Desaulses de Freycinet's Uranie voyage to Hawaii in 1819, and again in 1841 on La Bonite under Capt. August-Nicolas Vaillant.