Description: Very small, thin and pale-coloured crustose alga.

Habitat: Common on shells and maerl in the shallow sublittoral to 5 m.

Distribution: Rare, but widely distributed and in the British Isles including the Shetlands. Europe: Mediterranean, Spain and France.

Similar Species: Very similar to Cruoria pellita and Halarachnion ligulatum, the differences are microscopic.

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

iNaturalist: Cruoria cruoriaeformis at iNaturalist World Species Observations database.

GBIF data for Cruoria cruoriiformis

WoRMS: Cruoria cruoriaeformis at World Register of Marine Species. Accepted name: Cruoria cruoriiformis (P.L.Crouan & H.M.Crouan) Denizot, 1968. AphiaID: 145611.

Classification: Biota; Plantae; Biliphyta; Rhodophyta; Eurhodophytina; Florideophyceae; Rhodymeniophycidae; Gigartinales; Cruoriaceae; Cruoria