Description: Gametangial phase attached by a discoid holdfast and erect to 25 cms long much branched bearing short side ramuli in spirals.

Habitat: Rare. Epiphytic in the sublittoral to 20 m.

Distribution: Widely distributed in the south-west of the British Isles from Ireland, England , Wales and the Isle of Man. Europe: Mediterranean, Atlantic coasts of Spain and France. Further afield: Canary Islands.

Similar Species: Gloiosiphonia capillaris is similar but cystocarps in Naccaria envelope the axis near the tips.

Key Identification Features:

• Final filamentous branches arranged in spirals.

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

iNaturalist: Naccaria wiggii at iNaturalist World Species Observations database.

WoRMS: Naccaria wiggii at World Register of Marine Species. Accepted name: Naccaria wiggii (Turner) Endlicher ex J.Agardh, 1842. AphiaID: 145769.

Classification: Biota; Plantae; Biliphyta; Rhodophyta; Eurhodophytina; Florideophyceae; Rhodymeniophycidae; Bonnemaisoniales; Naccariaceae; Naccaria