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Mustard powder lichen

Chrysothrix candelaris


Chrysothrix candelaris is a bright yellow crustose lichen that doesn't show any reproductive structures like ascocarps. I thought it was a yellow-painted fence when I first saw it. It needs a few conditions to be met for it to thrive such as a dry shaded area and is usually found on old bark of sycamore, alder, oak, willow, beech, and Pinus species.


Spotted on old fence boards under the shade of a spruce tree.

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Leuba Ridgway
Leuba Ridgway a month ago

I've seen patches of these around here but nothing this bright. Nice spotting Brian and good to have an ID.

Mark Ridgway
Mark Ridgway a month ago

Hmm.. definitely seems relevant to the presence of that tree.

Brian38 a month ago

Thank you Tukup and Neil. Haha, your so funny Neil! I often get that headache before I post them!

Neil Ross
Neil Ross a month ago

Mother nature has chosen her own colour, and it's mustard yellow. A good choice. Cool spotting, Brian, and I'll second Tukup - good job identifying it. Whenever I post any fungus spotting, guaranteed the ÏD "headache" is bound to follow :-/

Tukup a month ago

Jaundiced eye Sukanya??? 😊 Good one.

Interesting Brian. I would have thought some kind of mold. Good job identifying it.

Brian38 a month ago

Thank you Sukanya.

SukanyaDatta a month ago

Even though not looking at it with a jaundiced eye, I think Colman's mustard will be edged out ...should this arrive on supermarket shelves. Great spotting Brian and what an extraordinarily appropriate name.

Spotted by

Washington, USA

Lat: 47.71, Long: -122.62

Spotted on Feb 12, 2020
Submitted on Feb 16, 2020

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