When: 2008-01-27

Collection location: Edgewood Blue, Wells Gray region, British Columbia, Canada [Click for map]

Who: Jason Hollinger (jason)

Specimen available

On birch twig (Betula papyrifera), probably only dead for less than a year. Visible as these tiny (0.5-1mm wide), cute little coral-pink warts that burst through the thin bark like tiny popcorn. The warts appear to be pycnidia (or whatever the mycological equivalent term is for this common lichen structure), composed of a thick gelatinous mass of conidia. The conidia are hyaline and elliptical, 6.5-8.5×2.5-3.5um (just measured a bunch off of the photo and recorded extremes). The hyphae on which the conidia are borne are themselves hyaline, septate, equally thick, occasionally branching, and potentially quite long (easily up to 40-50 um). Apparently this is an ascomycetes related to Hypocrea.

Species Lists


Under disssecting scope, 30×.
Under disssecting scope, 10×.
Under disssecting scope, 30×.
Section, under disssecting scope, 30×.
Section, under LM, at 100×.
Are these called phialides? These are the hyphae at the base of and that extend up into the conidial mass. Under LM, at 1000×.
Conidia mass, still intact. Under LM, at 1000×.
Conidia. Under LM, at 1000×.
I saw this (as the date indicates) several months after the original observation. It was just so much more photogenic of a specimen, I figured it was worth photographing and adding to the old observation.

Proposed Names

31% (3)
Based on microscopic features: 1-septate spores

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= Observer’s choice
= Current consensus


Add Comment
Impressive study
By: Jason Hollinger (jason)
2017-11-10 13:17:45 CST (-0500)

Thanks for the link, Danny. But… I never saw any ascospores in this specimen, so I don’t think we can key it out.

By: Jason Hollinger (jason)
2008-02-19 14:10:15 CST (-0500)

Thanks! I’m really pulling out every stop to try to find anything (nonlichenized) worth posting up here in the arctic winter! :) It was very fortuitous that I stumbled on the CFS page for this fungus accidentally while reasearching the Fomes fomentarius. I said “oh my god! that’s what that stupid pink thing is that’s been sitting on my desk for weeks!” and sure enough… Where would one even begin to key out an obscure asexual fruiting body like this anyway???

By: Debbie Viess (amanitarita)
2008-02-19 10:57:05 CST (-0500)

What a cool fruit body.