Marsupella

Terrestrial or lithophytic, paroecious or dioicous (not in Victoria). Stems simple or sparingly branched near base, with two ranks of lateral leaves, erect with normal leaves and prostrate with microphylls; branches emerging from near lateral leaves and with a collar of tissue at base. Lateral leaves transverse to succubous, imbricate, especially toward stem apex, contiguous or distant, erect-appressed or loosely spreading (not in Victoria), ovate to orbicular (not in Victoria) in outline, concave, bilobed or unlobed (not in Victoria); lobes entire, rounded or acute. Underleaves completely absent. Leaf cells circular to elliptic or quadrate to oblong (not in Victoria), smooth, thin-walled with distinct trigones or evenly thick-walled (not in Victoria), with 2–4 ovoid to ellipsoid and granular-botryoidal oil bodies, sometimes becoming hyaline and without oil bodies near margins (not in Victoria). Androecia with up to 12 pairs of leaf-like but larger and more ventricose bracts, each with 1–6 antheridia. Sporophyte at apex of leading stem, surrounded by bracts and a highly reduced perianth; bracts similar to normal vegetative lateral leaves but larger; perianth concealed by bracts, terminal on short tubular perigynium, short, tubular or ovoid, plicate and crenulate at mouth, with age sometimes becoming dissected. Capsule spherical to ovoid, 2–3-stratose, barely emergent beyond bracts when fully mature; elaters 2–4-spiral.