Guepiniopsis buccina
The tiny and rarely recorded Guepiniopsis buccina (Dacrymycetales: Dacrymycetaceae). Only 7 records are currently listed on the NBN Atlas [28 November 2025]. These specimens were recorded and photographed on rotten Beech Fagus sylvatica at a site in West Sussex. My thanks to Nick Aplin for the photomicrograph and for confirming identification.
References:
Buczacki, S., Shields, C. and Ovenden, D. (2012). Collins Fungi Guide: The most complete field guide to the mushrooms and toadstools of Britain & Ireland. London: HarperCollins, p. 594, fig. p. 595.
Reid, D.A. (1974). A Monograph of the British Dacrymycetales. Transaction of the British Mycological Society, 62(3), pp. 433-494.
https://species.nbnatlas.org/species/NHMSYS0001483270# [Accessed, 26th November 2025].