Diaporthe samaricola


The fungus Diaporthe samaricola produces small black dots on the samara (keys) of Ash.  Care is needed as another fungus, Neosetophoma samarorum produces even smaller black dots on these keys.

Similar Species
Identification difficulty
Recording advice

Please provide a photograph.  Some indication of size may also be helpful.


On the samara (keys) of Ash

When to see it

Winter and early spring.

UK Status

Seems to be widespread in Britain, but is under recorded.

VC55 Status

Status in Leicestershire and Rutland not known.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map