Acrobolbus setulosus

Plants yellowish- or whitish green. Stems ascending or erect, differentiated into stolons and erect leafy shoots, with dense white, simple or branched setae and scattered papillae; branches emerging from leafy stems laterally and not associated with a narrower leaf. Specialised asexual propagules absent. Rhizoids hyaline, scattered along stolons and base of leafy shoots. Leaves ovate to broadly ovate or rhomboid in outline, shallowly asymmetrically bifid or unlobed, well-formed leaves at mid-stem 1000–2325 μm long, 550–2125 μm wide, macrophyllous at base of leafy shoot, widely spreading, coriaceous in appearance, margin hyaline, undulate and spinose-dentate, with teeth irregular in size and sometimes terminated by a single row of up to four cells; lobes rounded or acute, dorsal smaller than ventral or absent. Underleaves absent. Leaf cells polygonal, 18–55 μm long, 18–35 μm, thin-walled, but thick-walled at margin, with distinct trigones, pluripapillose, with 10–13 oil bodies in cells near centre of leaf; oil bodies spherical to ellipsoid, pale golden brown to grey, finely granular. Androecia with up to 5 pairs of bracts and bracteoles, much smaller than vegetative leaves, each with 2 antheridia. Gynoecia on abbreviated leafy shoots emerging from base of leafy shoot or stolons. Capsule 5-stratose, in parts 4- or 6-stratose. Elaters bispiral. Spores with mesa-like projections.