Thallus form and type
Foliose and bushy Intertidal rocks
Infra littoral fringe and sub littoral zone, tide pools
Plants dark brown in colour with conical holdfast and spirally arranged terete, smooth, 4 - 8 cm long primary branches, primary branches covered with secondary branches of 2 - 12 cm long, secondary branches crowded with linear leaves; leaves thick, 1 - 2.5 cm long, 1 - 2.5 mm broad with entire to distantly denticulate margins truncate to obtuse apices (Figs. a, b); vesicles smooth born singly on short petioles or receptacular stalks, apiculate, apices cylindrical or leaf-like, male and female receptacles 2 - 5 mm long simple spindle shaped; tuberculate, often bearing leaves at the tips.
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