Description: Thallus grows from a discoid holdfast forming flat blades with pointed apicies, up to 25 cms long, clear mid-rib and latteral veins. Blades undevided, further blades growing from from the stipe and not from the blade.

Habitat: Common. Epilithic or epiphytic on Laminaria in low littoral pools and in the sublittoral to a depth of 30 m or more.

Distribution: British Isles on all coasts save parts of east England. Europe: Portugal, Spain, France, Faroes, Norway and Iceland.

Similar Species: Phycodrys rubens is easily distinguished by the margins of the lamina which in Phycodrys is serrated and produces large lobes like the primary lamina.

Key Identification Features:

• Frond leaf-like with mid-vein and side veins, the blade without serrations or lobes.

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

iNaturalist: Delesseria sanguinea at iNaturalist World Species Observations database.

WoRMS: Delesseria sanguinea at World Register of Marine Species. Accepted name: Delesseria sanguinea (Hudson) J.V.Lamouroux, 1813. AphiaID: 144744.

Classification: Biota; Plantae; Biliphyta; Rhodophyta; Eurhodophytina; Florideophyceae; Rhodymeniophycidae; Ceramiales; Delesseriaceae; Delesserioideae; Delesserieae; Delesseria