Treubia lacunosa
(Colenso) Prosk.Terrestrial or on logs (not in Victoria). Asexual reproduction by stalked obconical to obpyriform gemmae produced in axils of adaxial lobules, 10–15-celled at maturity. Shoots (30–) 40–80 (–160) mm long, (7–) 10–15 (–22) mm wide. Leaf-like segments semicircular to broadly lingulate, 3.8–6.8 mm long, 3.9–5.7 mm wide, succubous, spreading flat against substrate or upcurved, imbricate, rounded at apex, yellow- to deep green, (3–) 4–6 cells thick in midleaf, decreasing in thickness toward margin and unistratose for 4–18 marginal cell rows. Adaxial lobules reniform, erect to inclined forwards, long-decurrent. Cells of leaf-like lobes subquadrate to polygonal, trimorphic, the minority greatly enlarged and containing oil bodies, some with oil bodies but not enlarged and most chlorophyllose, without oil bodies; enlarged oil cells 2–4 times larger than adjacent cells, 75–240 μm diam.; chlorophyllose cells 30–80 μm diam; oil bodies 1 per cell, large, granular, opaque, grey. Antheridia in groups of 30–35 per lobule, long-stalked. Shoot calyptra covered with scattered paraphyllia and unfertilised archegonia. Capsule short ovoid, mostly 3-stratose, locally 2- or 4-stratose.
HSF. Recorded once in Victoria on a road embankment in wet sclerophyll forest on the west slopes of the Baw Baw Plateau. Also, Tasmania and New Zealand.
Schuster, R.M. & Scott, G.A.M. (1969). A study of the family Treubiaceae (Hepaticae; Metzgeriales). Journal of the Hattori Botanical Laboratory 32: 219–268.
