FIGURE 17. Riella cossoniana. A–B. General habit. A. Female plant. B. Male plant. C–D. Panduriform propaguliferous scales. E. Vegetative scale. F in Taxonomic revision of Riella subgenus Trabutiella (Riellaceae, Sphaerocarpales)

FIGURE 17. Riella cossoniana. A–B. General habit. A. Female plant. B. Male plant. C–D. Panduriform propaguliferous scales. E. Vegetative scale. F. Detail of cells from margin of thallus wing. G. Female involucre. H. Transverse section of female involucre. I. Spore in distal view. J. Spines from distal face. (All from 9.226 VAL-Briof.).