Description: Thallus foliose attached by minute discoid holdfast. Blade flat, monostromatic, up to 70 mm long and 33 mm broad. Dark red to purple in colour

Habitat: Common. Epilithic on stones and boulders and epiphytic on Laminaria and Saccorhiza in the shallow sublittoral.

Distribution: Widespread but generally more common on the southern shores of the British Isles. Europe: France.

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

iNaturalist: Porphyra drachii at iNaturalist World Species Observations database.

WoRMS: Porphyra drachii at World Register of Marine Species.