Arthonia punctella Arthoniaceae
Arthonia punctella #

Lichenicolous fungus on Diplotomma alboatrum

Epithecium dark red-brown, K+ dull red or olive

Occasional on thalli of Diplotomma alboatrum and D. chlorophaeum
BLS conservation evaluation: LC NR

Thallus absent. Spores 1-septate, 12-17 5-6.5(-7.5) m, initially colourless but soon becoming warted and brown.
Microscope photograph below.

Arthonia punctella

Arthonia punctella

Microscope photograph
Arthonia punctella
Arthonia punctella
On Diplotomma alboatrum, Portland, Dorset. February 2016

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