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 Padina
padina

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Padina spp. are a common group of brown algae (Phaeophyta) with leafy, fan-like blades.  Padina live on hard substrates like rocks in shallow water.  The "leaves" are lightly calcified and about 5 cm in diameter.  In contrast to Halimeda, Padina lays down the calcium carbonate on the cell wall surface rather than between the cells (intercellularly). These plants have no common names in Bermuda.