FIG. 3 in Revision of the genus Sirodotia Kylin (Batrachospermales, Rhodophyta) with description of four new species

FIG. 3. – Morphological features of Sirodotia species: A-E, Sirodotia amazonica Necchi, N.L.Rossignolo & M.O.Paiano, sp. nov. (all figures taken from sample SJRP 31924 - holotype): A, pear-shaped whorls; B, primary fascicle with spermatangia (arrow); C, carpogonium with a mature trichogyne (arrowhead) showing the basal hemispherical protuberance (double arrow) and attached spermatia (arrow); D, fertilized carpogonium with a cylindrical trichogyne (arrowhead), attached spermatia (arrow) and gonimoblast initial developing from the protuberant side of the carpogonial base (double arrow); E, carposporangia (arrow) and erect (arrowhead) gonimoblast filaments. F-J. Sirodotia aquiloamericana: F, pear-shaped whorls; G, primary fascicle with spermatangia (arrow); H, carpogonium with a mature trichogyne (arrow) showing the basal hemispherical protuberance (arrowhead); I, fertilized carpogonium with a cylindrical trichogyne (arrowhead), attached spermatia (arrow) and gonimoblast initial developing from the protuberant side of the carpogonial base (double arrow); J, carposporangia (arrow) and erect (arrowhead) gonimoblast filaments. K, Sirodotia assamica Necchi, N.L.Rossignolo, F.Yasmin, J.A.West & Ganesan (photo taken from sample SJRP 32583): pear-shaped whorls showing densely arranged spermatangia (arrows). Scale bars: A, F, K, 200 μm; B, G, J, 20 μm; C-E, H, I, 10 μm. H-I, redrawn from Necchi et al. (1993).