Thallus form and type
Leafy and mucilaginous Intertidal rocks
Lower mid littoral zone and infra littoral fringe
Plants rose red in colour, up to 48 cm long, 40 cm wide, erect, tough and elastic in consistency, cordate base and sinuate or wavy margins; fronds sometimes lobed in the upper position (Figs. a, b); tetrasporangia ovoid to sub-spherical, cru-ciately divided and scattered in the cortical layers; cystocarps sub-spherical, scattered in the thallus and extending out into the medullary region. Halymenia species are used for food
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