Bolbitis heudelotii (Bory) Alston

Rhizome up to 10 mm in diameter, set with very dark brown, lanceolate, acuminate, entire rhizome-scales c. 3 mm long. Fronds spaced up to 30 mm apart, arching, firmly membranous, slightly dimorphous; stipe up to 290 mm long and 4 mm in diameter, glabrous or set with a few scales; sterile lamina ovate-oblong, up to 270 x 170 mm, pinnate or pinnatifid, pinnae oblong-lanceolate, acute to acuminate, up to 75 x 12 mm, entire to weakly crenate, base unequally cuneate to decurrent, glabrous, rhachis and costae set with dark brown, ovate, entire scales up to 2 mm long when young, becoming glabrous with age; fertile lamina narrowly oblong-lanceolate, pinnate, pinnae lanceolate-acuminate, entire, up to 100 x 14 mm, petiolate or with unequally cuneate decurrent bases, glabrous. Sori acrostichoid.

Spray–soaked rocks near streams and waterfalls, often submerged.