Collection locality: Buscot Lock, River Thames, Oxfordshire, England Ecology/habitat: River
Notes: Dark-coloured mat growing over mud at and just below a sluice gate at the summer average water level
Reference: The Freshwater Algal Flora of the British Isles 2nd edn (2011), p. 336
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith