Desmid new to British Isles found in Clashmore Quarry
On 13th April 2015 I collected a sample of desmids from the large pool in Clashmore Quarry (NC036316) for an old friend, David Williamson, the British expert on these microscopic algae. The sample proved to be quite rich, and amongst the 38 forms identified by David was one, Closterium macilentum var. substriatum, a desmid new to the British Isles. This paper, in the Quekett Journal of Microscopy, describes the new variety and is illustrated by David’s fascinating drawings.
More of David Williamson’s drawings can be seen on our website at this post Drawings of Desmids from Assynt by D. B. Williamson
Ian Evans
The Discovery of Closterium macilentum var. substriatum (Gronblad) Krieger in the British Isles (415KB pdf)