Peyssonnelia belongs to class Florideophyceae, of the order Peyssonneliales and Family … See more

The genus is calcareous and is characterized by crustose, prostrate thalli attached to the substrate by uni- or multicellular rhizoids. Thalli may be partially or fully calcified, with calcium carbonate deposited a… See more

The genus is distributed in arctic and temperate to subtropical and tropical waters. See more

Peyssonnelia occurs in intertidal to shallow subtidal waters, and have also been found to occur in deep-water habitats, existing as far as 288 m depths in the Bahamas, which makes them some of the deepest occurring photosynth… See more

A study conducted on nine Peyssonnelia species collected from Spain found that most species possessed fertile tetrasporophytes in Autumn, suggesting this is the season of peak reproduction, followed b… See more

A study in 2009 found that extracts of a certain Peyssonnelia species contained peyssonoic acids A-B (1-2), which are growth inhibitors for bacteria (Pseudoalteromonas bacteriolytica) and fungal path… See more