7. Ceratolacis (Tulasne) Weddell
Ceratolacis (Tulasne) Weddell in A. de Candolle, Prodromus 17: 66 (1873); van Royen, Acta Bot. Neerl. 3: 224--228 (1954), rev.; Philbrick, Novelo & Irgang, Novon 14: 108--113 (2004), rev.
Roots thread-like, cylindrical to semicylindrical, , branched, rarely up to 5 mm wide, red or dark green; stems short and obscured by leaf bases, borne along lateral margins of roots, usually in opposite or subopposite pairs. Leaves 2--30 or more mm long, either entire and linear or a few times forked with linear segments, with 1 stipule on the dorsal side of the shoot, attached to the associate leaf. Spathellas club-shaped. Flowers up to 6 per shoot; pedicel in fruit either short or up to ± 8 mm long, peduncle as additional stalk below spathella up to 8 mm long in C. pedunculatum; tepals 2 or 3, one each side of andropodium and one (when present) between the two filaments; stamens 2, borne on an andropodium; anthers dehiscing introrsely; pollen in dyads. Capsules spindle-shaped; valves equal, each with midrib running into stigmas and 2 faint lateral ribs; stigmas equal, persistent, horn-like, diverging. Seeds unknown. Two spp., C. erythrolichen (Tulasne & Weddell) Weddell from Rio Tocantins, Brazil and C. pedunculatum C. T. Philbrick, Novelo & Irgang, from Minas Gerais, Brazil.