Acrobolbus pseudosaccatus

Plants light green. Stems arched over substrate, smooth, differentiated into basal stolons and initially erect leafy shoots that are usually cernuous toward apex; branches derived from stolons and bases of leafy shoots, emerging laterally and without an associated modified leaf. Specialised asexual propagules absent. Rhizoids confined to stolons and bases of leafy shoots, scattered. Leaves broadly ovate in outline, unlobed and truncate at apex or retuse to shallowly bilobed, well-formed leaves at mid-stem 2500–3900 μm long, 2125–2875 μm wide, microphyllous near base of shoot, wide-spreading, facing upward away from substrate around mid-stem, mostly concave adaxially, loosely imbricate, serrate with up to 40 uni- or multicellular sharply acute teeth; lobes broadly rounded, with ventral lobe larger. Underleaves absent. Leaf cells polygonal, 27–50 μm long, 22–40 μm wide, becoming more elongate near base where 45–120 μm long, 20–48 μm wide, thin-walled becoming thicker walled in teeth, without trigones, smooth, with 4–7 oil bodies near leaf centre; oil bodies spherical, ellipsoid or fusiform, pale orange, coarsely granular. Androecia with 3– 6 pairs of bracts and inconspicuous bracteoles, each with 3– 6 antheridia. Capsule long-cylindric, 6–8-stratose. Elaters bispiral. Spores irregularly areolate.