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Fig. 1 | Helgoland Marine Research

Fig. 1

From: New records of rhodolith-forming species (Corallinales, Rhodophyta) from deep water in Espírito Santo State, Brazil

Fig. 1

Spongites yendoi. a Morphology of a rhodolith with warty growth form. Scale bar 2.5 mm. (RB 458711). b Longitudinal section showing the internal monomerous thallus construction. P peripheral region and C core region. Scale bar 52 μm. (RB 458711). c Longitudinal section of the outer perithallium showing the flattened, but rounded epithallial cells (black arrow) and cell fusions between cells of adjacent peripheral filaments (white arrow), S = subepithallial initials cells. Scale bar 10.5 μm. (RB 458711). d Longitudinal section through a uniporate tetrasporangial conceptacle with roof protruding above the surrounding thallus surface. Note the tetrasporangium (arrow). Scale bar 45.7 μm. (RB 458711). e Longitudinal section showing a tetrasporangium in detail. Numbers 1–4 indicate the four spores in tetrasporangium. Scale bar 9 μm. (RB 458711)

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