synan's picture

Black, sterile, areolate crust

Observed: 11th November 2012 By: synansynan is knowledgeable about Fungi and Lichenssynan’s earned reputation in Fungi and Lichenssynan’s earned reputation in Fungi and Lichenssynan’s earned reputation in Fungi and Lichenssynan’s earned reputation in Fungi and Lichenssynan’s earned reputation in Fungi and Lichens
Anglezarke Moor 098
Anglezarke Moor 099
Description:

Black, sterile, areolate crust on siliceous rock in boggy habitat near river. The photobiont is a green alga. I was wondering about Caloplaca chlorina, but can't discern any isidia and don't get a K+ violet reaction (more of a yellow-brown - presumably a pigment dissolving in the K).

Identifications

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

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

Species interactions

No interactions present.

Comments

synan's picture

Dermatocarpon leptophyllodes

Hi Jenny

I see that D. leptophyllodes can resemble a cracked-areolate crust. However, my sample is definitely crustose, and in fact difficult to separate from the substrate to avoid getting grit under the coverslip.

Many thanks for the suggestion :)

Nigel

AlanS's picture

Nigel ...

I think you were right and I would agree if you put up C. chlorina as an ID (even with a degree of doubt). Your photograph seems to me to have blastidia and I have put it up next to a photo of my own of definite C. chlorina and I don't see a lot of difference.

Alan