Geocalyx caledonicus

Terrestrial or on logs, yellow- to whitish milky green. Specialised asexual propagules absent. Stems prostrate; branches emerging from ventral stem and with a collar of tissue at base, very rarely emerging abaxial to unlobed lateral leaf and without a collar of tissue at base. Lateral leaves oblong-ovate or trapezoid in outline, bilobed, rarely 3-lobed in some leaves, 0.88–1.4 mm long, 0.6–1.2 mm wide, imbricate, angled away from substrate at base, insertion line extending to dorsal stem midline or leaving a one cell wide leaf-free strip, basiscopic margin decurrent; lobes 0.2–0.3 of the overall leaf length, equal or unequal, triangular with acute apices. Underleaves bilobed, 0.38–0.55 mm long, 0.33–0.4 mm wide, appressed to stem or slightly spreading away from stem, free or attached on one side to adjacent lateral leaf, plane to weakly convex when viewed from below; lobes linear-lanceolate, parallel to divergent, 0.7–0.8 of the entire leaf length. Leaf cells polygonal, 15–60 μm long, 15–35 μm wide, striate-papillose, thin-walled, with distinct trigones, with 2–11 oil bodies; oil bodies coarsely granular, orange-brown. Rhizoids in fascicles from underleaf surface and base. Androecia on short branches emerging from ventral stem or on main axis, with 4–9 pairs of cucullate bracts with dentate basiscopic margin. Sporophytes terminal on short branches emerging from ventral stem. Spores with short, low vermiform ridges, pale yellow-brown. Elaters bispiral.