Type Locality: Sweden, Europe.
Distribution: Europe: Sweden; Asia: Japan; Australia; New Zealand; North America: Canada, U.S.A.
“Plants trioecious, richly mucilaginous, 2-10 cm high, 200-300 mm in diameter, more or less abundantly and irregularly branched, yellowish green. Whorls small, ellipsoidal, separated each other in male plants, finally pear-shaped or confluent. Primary fascicles 8-10 cell-storeys, cells cylindrical or barrel-shaped, ellipsoidal or obovoidal, terminal hairs present. Secondary fascicles numerous, finally reaching length of primary ones. Spermatangia spherical, 5-6 mm in diameter, terminal on fascicles. Carpogonium-bearing branches, short, consisting of 2-5 barrel-shaped more of less iso-diametrical cells, arising from periaxial cells. Involucral filaments short, consisting of ellipsoidal cells. Carpogonia with a hemispherical protuberance on one side of basal portion, 30-40 mm long, trichogyne ellipsoical, finally cylindrical or spatula-shaped more or less distinctly stalked. Carposporophytes indefinite in shape, gonimoblast filament irregularly branched, arising from the opposite side (dorsal side) of a basal hemispherical protuberance of carpogonium, creeping along cortical filaments. Carposporangia obovoidal to elongated pear-shaped, 5-8 mm in diameter, 10-12 mm long. “
Kumano, S. 2002. Freshwater red algae of the world. Biopress Ltd. 375pp.
