Sunday, 22 February 2026

Weird, weird, weird yeast

20th February 2026 - whilst working with the local Wildlife Trust group working along the Old Railway Cutting, Andy M found this colourful but frankly quite weird, 'growth' on the end of a wild clematis branch. About 8-10cm long, it looked slimy, but was actually quite solid, and coloured all shades of orange and yellow.

A little searching of the internet suggests this is a mass of a basidiomycete yeast (Cryptococcus macerans) which forms this 'slime flux' by growing on sap exuded from the cut ends of trees.  Weird!!

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