Abstract
ON October 26, while conducting some preliminary investigations in the course of an ecological survey of a salt-spring situated at Aldersey1, seven miles south-south-east of Chester, the filamentous alga Percursaria percursa (formerly known as Enteromorpha percursa (Ag.)) was encountered. The presence of this alga is interesting because Percursaria is usually found in rock pools on the shore between tide marks. The only previous record of Percursaria from a brackish non-coastal region, which has come to my notice, is that mentioned by Grove2 from brackish waters in the Midlands. The alga was evidently found in a ditch near the canal at Salwarp, Worcestershire. A note of this find is recorded by West and Fritsch3. The species is described and figured by Newton4.
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References
Sherlock, Mem. Geol. Survey, Mineral Resources of Gt. Brit. Rock-salt and Brine, 18, 111 (1921).
J. Bot., 58, 33 (1920).
“British Freshwater Algæ”, p. 162 (1927).
Brit. Museum: Handbook of British Seaweeds (1931).
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BURKE, F. Occurrence of a Halophilic Alga in Mid-Cheshire. Nature 149, 331 (1942). https://doi.org/10.1038/149331b0
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DOI: https://doi.org/10.1038/149331b0
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