Ginny B's picture

Hydropunctaria/Verrucaria sp

Observed: 8th August 2012 By: Ginny B
S159 Neighbourhood Nature - course complete
Ginny B’s reputation in Fungi and LichensGinny B’s reputation in Fungi and LichensGinny B’s reputation in Fungi and Lichens
Hydropunctaria sp
Hydropunctaria maura crop

Growing from below the average high tide level where is covers large areas looking like black rock, gradually petering out in the orange zone where it is mostly to be found in crevices in the rocks. Tiny cracks and bumps in its surface, but very hard to see even with my hand lens. This might be Hydropunctaria maura, but I aware that there are others that need to be considered.


Caution: Do NOT use iSpot to identify fungi to eat!

Some fungi are very poisonous so a mistaken ID could have serious consequences.

    Likely ID
    black tar lichen (Hydropunctaria maura)
    Confidence: It might be this.
Species interactions

No interactions present.


AlanS's picture

True maura

I feel very confident. The others are thinner and often less cracked (though maura often is too).


P.S. Probably better to add the synonym, Verrucaria maura, as this is still the name in all the books. On my own website I keep this under Verrucaria for the same reason, and because I await a more comprehensively definitive account of the Verrucaria splits (though the DNA evidence is compelling).