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Authority: |
(Kützing) P.Gayral ex C.Bliding |
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Description: |
Thallus widely-bladed, similar to that of Ulva, turning brown on dying. Blade monostromatic. In sublittoral, at 3-17 m depth, everywhere. Occuring not often. Bipolar species. |
| Name History |
Adjective (Latin), dark, shady, indisctinct (Stearn 1973). |
| Biogeography |
NE Atlantic (Iceland and Norway to Portugal); Atlantic Is; NW Atlantic (Alaska and Greenland to Washington); SW Atlantic (Argentina). |
| References |
Brodie, J., Maggs, C.A. & John, D.M. (2007). Green seaweeds of Britain and Ireland. pp. [i-v], vi-xii, 1-242, 101 figs. London: British Phycological Society. Guiry, M.D. (1997). Benthic red, brown and green algae. In: The Species Directory of the Marine Fauna and Flora of the British Isles and Surrounding Seas. (Howson, C.M. & Picton, B.E. Eds), pp. 341-367. Belfast & Ross-on-Wye: Ulster Museum & Marine Conservation Society. Loiseaux-de Goër, S. & Noailles, M.-C. (2008). Algues de Roscoff. pp. [1]-215, col. figs. Roscoff: Editions de la Station Biologique de Roscoff. Sfriso, A. (2011). Chlorophyta multicellulari e fanerogame acquatiche. Ambiente di transizione italiani e litorali adiacenti. pp. [1]-318, pls 1-94. Bologna: Arpa Emilia-Romagna. |
| Habitat: |
From the tidal zone to the sublittoral. |
| Type information: |
Basiony: Ulva obscura Kützing Type locality: Biarritz, Pyrénées-Atlantiques, France (Kützing 1843: 296). Holotype: P.A.C. Endress; iv.1831; L 938.53.77 (Kützing 1843: 296). |
