Mesophyllum lichenoides (Linnaeus) Lemoine
Description: Pale to dark purple thin, brittle,
leafy calcified fronds, attached at base, margins free, lobed.
Fronds semicircular, concentrically banded (above). Reproduction
takes place in winter and spring in small, wart-like
conceptacles on the surface, persisting.
Habitat: Epiphytic on Corallina officinalis in tidal pools; S and W to Orkney Islands,
occasional, locally frequent. Further south in the Atlantic,
plants of this species occur on rock, but it the British Isles,
the species is always epiphytic.
Key characteristics: Calcareous, thin brittle
fronds with concentric markings.
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