Laminaria ochroleuca De La Pylaie Growing on the Coast of Britain

Abstract

ON April 10, 1946, a Laminaria plant, trawled in Plymouth Sound and brought into the Plymouth Laboratory by Miss M. F. Sutton, Department of Biology, Chelsea Polytechnic, was identified by me as Laminaria ochroleuca De La Pylaie, a species of Laminaria that had not previously been recorded from the coasts of Britain. As trawling over the same ground on subsequent days failed to procure further plants of this species, the record was not published. A recent survey, however, has shown that this species occurs quite frequently in the more sheltered parts of Plymouth Sound. It is found on rocky ground from just below, down to eight metres below, low water spring tides, growing usually with L. cloustoni Edmondst. or Saccorhiza bulbosa De La Pylaie.