A green seaweed (Urospora wormskioldii)
|Researched by||Michelle Carter||Refereed by||Admin|
|Authority||(Mertens ex Hornemann) Rosenvinge, 1893|
|Other common names||-||Synonyms||-|
Recorded distribution in Britain and IrelandIsolated records from the Shetland Islands, east and south coasts of England, Northern Ireland, the Firth of Clyde and the outer Hebrides.
Global distributionUncommon around the British Isles. Distributed around Europe and also the Pacific Coast of North America and the Canadian Arctic South.
HabitatThe filamentous phase occurs on rocks in the intertidal and on submerged rocks and wood surfaces. The Codiolum-like phase, forms, soft dark green turfs over large areas on the upper shore where it may be wetted at every tide or left exposed for several days at a time.
- This species exhibits three different types of thallus depending on environmental conditions.
- Varies from green to purple in colour.
- Large cell size (0.1-0.5 mm).
Additional informationThe large cell size of this species distinguishes it from other Ulothrix and Urospora species. The three varieties of thallus include, filamentous; dwarf filamentous and unicellular Codiolum-like.
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Burrows, E.M., 1991. Seaweeds of the British Isles. Volume 2. Chlorophyta. London: British Museum (Natural History).
Hardy, F.G. & Guiry, M.D., 2003. A check-list and atlas of the seaweeds of Britain and Ireland. London: British Phycological Society
Howson, C.M. & Picton, B.E., 1997. The species directory of the marine fauna and flora of the British Isles and surrounding seas. Belfast: Ulster Museum. [Ulster Museum publication, no. 276.]
Lewis, J.R., 1964. The Ecology of Rocky Shores. London: English Universities Press.
Morton, O., 1994. Marine Algae of Northern Ireland Belfast: Ulster Museum [Ulster Museum Publication, no. 271]
Kent Wildlife Trust, 2018. Biological survey of the intertidal chalk reefs between Folkestone Warren and Kingsdown, Kent 2009-2011. Occurrence dataset: https://www.kentwildlifetrust.org.uk/ accessed via NBNAtlas.org on 2018-10-01.
NBN (National Biodiversity Network) Atlas. Available from: https://www.nbnatlas.org.
OBIS (Ocean Biodiversity Information System), 2023. Global map of species distribution using gridded data. Available from: Ocean Biogeographic Information System. www.iobis.org. Accessed: 2023-11-29
This review can be cited as:
Last Updated: 17/07/2003