FIGURE 2 in Taxonomic revision of Riella subgenus Trabutiella (Riellaceae, Sphaerocarpales)

FIGURE 2. Stereomicroscopy photographs of plants of dioicous species of Riella subgen. Trabutiella. A–C. R. cossoniana. D–F. R. echinata. G–I. R. mediterranea. A, D, G. Habit of male plants. B. E, H. Habit of female plants. C. Ellipsoid involucres with 8 broad wings and blunt apices. F. Ovoid involucres with 6 thin, irregular and discontinuous wings and apiculate apex, note the air bubble inside the involucres in E and F. I. Acuminate involucre with 15 thin, irregular and discontinuous wings.