pondlife's picture

Lichen

Observed: 17th June 2011 By: pondlifepondlife’s reputation in Fungi and Lichenspondlife’s reputation in Fungi and Lichens
lichen
Description:
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

Foliose

I have added agreement to the Evernia ID, but it is foliose, not fruticose.

Alan

Sarah West's picture

Thanks for pointing the error

Thanks for pointing the error out Alan.

Sarah West
www.OPALexplorenature.org
OPAL Community Scientist
Yorkshire and Humber

Sarah West's picture

Foliose vs. Fruticose

Hi Alan, since my previous post I've been looking into the differences between foliose and fruticose growth forms. I had wrongly understood that they were distinguished by the way they are attached to the substrate, but having read your comments elsewhere, see that the difference is related to the cortex (surface). I hope you don't mind me posting your explanatory comment below for others to learn from, as I found it very helpful:

"The critical feature is that foliose species have distinct upper and lower cortexes (i.e. they are different underneath) whereas fruticose species have a continuous cortex both sides if they happen to be flattened. This means that Evernia is foliose, while superficially very similar species of Ramalina are fruticose."

Thanks for your help.

Sarah West
www.OPALexplorenature.org
OPAL Community Scientist
Yorkshire and Humber