Observation 90874: Arthonia Ach.

When: 2012-03-24

Collection location: Ottawa, Ontario, Canada [Click for map]

Who: Jonathan M

No specimen available

can it also be not fungal, very common on young maple trees


Proposed Names

28% (1)
Recognized by sight
56% (1)
Recognized by sight

Please login to propose your own names and vote on existing names.

= Observer’s choice
= Current consensus


Add Comment
By: Jason Hollinger (jason)
2012-03-25 14:54:19 CST (+0800)

I think I see perithecia (or perithecioid apothecia) buried in the thallus. It may or may not be lichenized, but either way I’m confident this is within the material covered typically by crustose lichenologists.