FIGURE 2. A in Additions to the Ricciaceae flora of Rio Grande do Sul, including two remarkable records for the Brazilian liverwort flora

FIGURE 2. A. Habit of Riccia iodocheila; B. Light microscopy photo of papillae at apex of thallus; C. Papillae on margins of thallus; D–E. SEM micrographs of spores D. Proximal face; E. Distal face with detail of areolate ornamentation; F. Light microscopy micrographs of spores, (left) distal face with detail of triangular tubercles, and (right) proximal face, with detail of weak trirradiate scar and crenulated margins. Bars: A=2 mm; B=500 µm; C=1 mm; D–F=20 µm.