When: 2020-07-19

Collection location: Wallace Falls State Park, Snohomish Co., Washington, USA [Click for map]

Who: parasitis_voracibus

No specimen available

The lichen had tiny pink apothecia, of which I could not visually detect any stalks. Unsure of it being Icmadophila ericetorum. It was growing on a mossy boulder.


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Add Comment
Thank you, Jason
By: parasitis_voracibus
2021-01-11 14:54:34 IST (+0530)

I always appreciate you taking the time to explain these things. Icmadophila ericetorum didn’t feel right for this one, but the apothecia were so tiny it was hard to make out the fine details.

These would actually be considered stalked
By: Jason Hollinger (jason)
2021-01-11 14:16:44 IST (+0530)

Barely, true, but definitely not sessile.

I know the literature (at least many keys) put pink apothecia in Dibaeis baeomyces, but Baeomyces can be pink, too. Especially when the apothecia are very young like these.

Icmadophila really prefers rotting wood. Maybe it could overgrow a moss boulder right next to a rotten log, but this looks like it’s establishing directly on rock. That’s the favorite habitat of Baeomyces rufus. Especially in and around trails.