Desmarestia dudresnayi ssp. foliaceae
Desmarestia dudresnayi ssp. foliaceae collected and photographed by Jenn Burt. Note the short stipe and small discoidal holdfast at right.
Formerly known as Desmarestia folicacea, this annual brown seaweed has a thin, rounded blade with a faintly-visible central vein branching outward. It has a short stipe, and a small disc-shaped holdfast. Like other Desmarestia species — often aptly named "acid kelps" — the blade contains sulphuric acid that will cause the blade to discolour and degrade when exposed to air. Despite their common name and kelp-like appearance, Desmarestia species are not actually kelps.
This species is found in the low intertidal and subtidal of semi-protected to semi-exposed shorelines.
This species is found in the low intertidal and subtidal of semi-protected to semi-exposed shorelines.
References
Burt, J. and Prinzing, T. (2016). Subtidal kelp species field guide. Simon Fraser University.
Guiry, M.D. & Guiry, G.M. 2019. Desmarestia dudresnayi subsp. foliaceae (V.A.Pease) A.F.Peters, E.C.Yang, F.C.Küpper & Prud'Homme van Reine. National University of Ireland, Galway.
Authors and editors
Kelly Fretwell (2019).
Burt, J. and Prinzing, T. (2016). Subtidal kelp species field guide. Simon Fraser University.
Guiry, M.D. & Guiry, G.M. 2019. Desmarestia dudresnayi subsp. foliaceae (V.A.Pease) A.F.Peters, E.C.Yang, F.C.Küpper & Prud'Homme van Reine. National University of Ireland, Galway.
Authors and editors
Kelly Fretwell (2019).
