Trophophore stalk 2--8 mm, 0--1/5 length of trophophore rachis; blade glaucous, pale green to whitish, oblong, ± longitudinally folded when alive, 1-pinnate, to 4 × 1 cm, herbaceous. Pinnae to 5 pairs, ascending, approximate, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, basal pinna pair approximately equal in size and cutting to adjacent pair, fan-shaped, strongly asymmetric, lobed to divided to tip, margins entire to irregularly crenate-dentate, largest pinnae often split into 2 unequal lobes, apex rounded, venation like ribs of fan, midrib absent. Sporophores 1--2-pinnate, 1.5--4 times length of trophophore. 2 n =90.
Home