carol21's picture

Lichen on crab apple

Observed: 20th November 2011 By: carol21
S159 Neighbourhood Nature - current student
carol21’s reputation in Fungi and Lichenscarol21’s reputation in Fungi and Lichens
DSC00953
Description:

a fruticose(?) lichen on a crabapple tree as it appears to be attached only by one central 'foot'

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

Evernia prunastri

This lichen appears fruticose (it has aerial branches), but its growth form is classed as foliose.

Nigel

carol21's picture

Evernia prunastri

Thank you - I have two id brochures with this on, one gives it as fruticose, one as foliose looking like fruticose as you say. Presumably the one identifying it as foliose is more up to date.

synan's picture

Foliose

Yes - the deciding factor is that E. prunastri has different upper and lower surfaces (grey-green above and white below). If it had one continuous surface, it would classed as fruticose.

It's an arbitrary classification system anyway, but one we seem to be stuck with.

Nigel