Monday, 10 May 2021

APRIL 2021 - Uncommon and rare species

 April was a very dry month and with it came the difficulty of finding Fungi. Focussing on Ascomycetes and where I could find damp conditions helped and yet one or two very interesting species were still found. One was new to the UK thanks to the incredible knowledge and experience of Dr Paul Cannon (Kew). After visiting my recently found delight, a short walk from home - a Willow Carr with flowing stream, etc., I found two ascos on one small branch of Salix close to a stream. One belonged to the Hysterium genus but I knew this wasn't the usual common species of H. angustatum. Paul confirmed with me that this was H. smilacis (1st for Gloucs. and very few other records in the UK) but even better was the tiny black dots on the same branch which Paul discovered was a new species for the UK in Eutypa petrakii. Again, on another trip close by on the root end of a dead but large and so very thorny Rubus stem, I found what looked like a Nectria species. This turned into the new genus of Thelonectria rubi (1st Gloucs./few others in UK). Other new species for Gloucs were: Exidiopsis calcea, Mollisia hydrophila and probably Sistotremastrum suecicum, as I couldn't see any 6-sterigmata on the basidia as difficulty to see just four. Quite a few others also and have added these below as uncommon only. 

Eutypa petrakii (new UK species) - pic © P. Cannon

Eutypa petrakii (new UK species)

Exidiopsis calcea

Exidiopsis calcea spores 1000x

Hysterobrevium smilacis spores

Hysterobrevium smilacis

Pyrenopeziza carduorum


Pyrenopeziza carduorum asci

Pyrenopeziza carduorum ascospores



Mollisia hydrophila

M. hydrophila on Carex sps

Mollisia hydrophila



Sistotremastrum suecicum

Sistotremastrum suecicum

Sistotremastrum suecicum

Sistotremastrum suecicum spores

Thelonectria rubi

Thelonectria rubi


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