synan's picture

Lichenicolous fungus

Observed: 11th August 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
Acarospora fuscata
Acarospora fuscata (3)
Acarospora fuscata (4)
Acarospora fuscata (5)
Description:

Possible fungus-induced galls (to 4mm) on Acarospora fuscata (C+ red) growing on vertical, well-lit gritstone.

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

AlanS's picture

Sorry, but

Polycoccum is a genus of pyrenocarpous fungi in which the perithecia are individual and usually immersed in the lichen thallus. A couple form galls, but apparently not P. microstictum. I don't think it can be this.

I don't currently have any other ideas though.

Alan

synan's picture

Thank you, Alan

A quick squash didn't seem to offer much more than algal cells but I will look again, and if all else fails, think about troubling a referee (Mark Seaward if I follow the request to use a local contact).

Nigel

synan's picture

Rimularia furvella

Thanks again! A lichenicolous lichen didn't occur to me. I will test when I get back home.

Edit: No reactions (C-, K-), despite buying fresh bleach and testing it on Ochrolechia parella, and checking the K against Pertusaria pseudocorallina. Perhaps because it is immature. The chlorobiont cells are around 7.5-12.5μm. R. furvella still seems the best bet.

Nigel