Triandrophyllum subtrifidum

Lithophytic or terrestrial (not in Victoria), olive-green, whitish green to pale brown to yellow-brown. Branches emerging from main stem from axils of lateral leaves or underleaves and with a collar of tissue at base, rarely emerging abaxial to modified lateral leaves with a reduced number of lobes and without a collar of tissue at base. Lateral leaves 2- or occasionally 3-lobed, asymmetrically ovate to oblong-ovate to subrectangular in outline with dorsal margin dilated at base, 0.58–2 mm long, 0.37–1.4 mm wide, obscurely to distinctly ventrally secund, widely spreading, concave adaxially, remote to imbricate, entire or with cilia at extreme base; lobes triangular, 0.3–0.4 the total length of leaf, unequal, dorsal lobe largest, third lobe when present smallest, acute, apiculate or rounded at apex. Underleaves smaller than lateral leaves, 0.4–1.15 mm long, 0.28–0.83 mm wide, symmetrically ovate to oblong, widely spreading. Leaf cells polygonal, 17–48 μm long and 17–33 μm wide in mid-leaf, becoming more elongate toward basal centre, firm- to thick-walled, with small or obscure trigones, densely striolate-papillose, with 5–6 finely botryoidal oil bodies. Androecia of 4–6 pairs of bracts, ventricose and less deeply dissected than vegetative leaves, otherwise similar; antheridia 2–3 per bract and bracteole. Sporophyte produced on main shoot or leading branches. Bracts subtending perianth much larger than vegetative leaves. Perianth narrowly ovoid, not exerted beyond bracts, terete at base, becoming plicate toward mouth where dissected into 9 lobes, each dentate near base. Capsule spherical, 4–5-stratose. Spores papillate or vermiculate, reddish brown.