When: 2018-02-25

Collection location: Boyd Big Tree Conservation Area, Dauphin Co., Pennsylvania, USA [Click for map]

Who: billyd

No specimen available

Notes:
At first thought this was a lichen, but spores are born from a perithecium and not an apothecium. Additionally did not appear to be superficial but emerging from the semi-decayed, but still standing, dead oak tree.

Images

bar=20um
bar=20um

Proposed Names

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= Observer’s choice
= Current consensus

Comments

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Happy to help, Billy.
By: Judi T. (AvidAmateur)
2018-02-27 20:58:46 CST (-0600)

Most Missouri forests have abundant oak, so I see a lot of Hypoxylon almost every time I’m in the woods. Nice to have some micrographs posted. Thanks for that.

Thanks Judi
By: billyd
2018-02-27 10:52:58 CST (-0600)

I think you are right. Having a duh moment. I guess I’m use to seeing hypoxylon as old black stroma.

Have you considered Biscogniauxia atropunctata?
By: Judi T. (AvidAmateur)
2018-02-27 09:44:40 CST (-0600)

It’s a little hard for me to see the details in your photos so I hesitate to propose this name. My obs of this species, common on Oak, might be helpful for you to rule that species in or out. Observations 233754 , 231004 and 198612 . This last Ob addresses both the sexual and asexual forms.

Created: 2018-02-27 08:43:40 CST (-0600)
Last modified: 2018-02-27 20:58:46 CST (-0600)
Viewed: 60 times, last viewed: 2020-07-26 05:20:06 CDT (-0500)
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