RHODOPHYTA : Corallinales : HapalidiaceaeRED ALGAE

Exilicrusta parva Chamberlain


Description: Small flat and thin thallus closely attached to stone growing to 3 cms in diameter. Margin without orbital ridges. Conceptacles only slightly raised above thallus surface.

Habitat: Very rare. Epilithic on stones, sublittoral to 11 m depth. Known from only a few specimens.

Distribution: Southern England.

Distribution Map from NBN: Exilicrusta parva at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Exilicrusta parva at iNaturalist World Species Observations database.

WoRMS: Exilicrusta parva at World Register of Marine Species.

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 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Exilicrusta parva. Chamberlain. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZM4060. Accessed on 2026-11-01