Observation 92548: Lithothelium hyalosporum (Nyl.) Aptroot

When: 2012-04-08

Collection location: Pine Hollow State Natural Area, Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

Specimen available

Species Lists


Copyright © 2012 Jason Hollinger (jason)
note the oblique ostioles!
Copyright © 2012 Jason Hollinger (jason)
note the oblique ostioles!
Copyright © 2015 Jason Hollinger (jason)

Proposed Names

2% (2)
Recognized by sight
76% (2)
Used references: ID provided by Jason Hollinger

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= Observer’s choice
= Current consensus


Add Comment
Cool, thanks!
By: Andrew Khitsun (Andrew)
2015-12-16 05:11:33 CET (+0100)
Added microscopy
By: Jason Hollinger (jason)
2015-12-15 05:41:49 CET (+0100)

I’d never heard of the genus, if I remember right, it is characterized by the oblique ostioles and spores with ±cylindrical cells.

Well, send it on out in the next shipment!
By: Jason Hollinger (jason)
2012-04-14 02:16:17 CEST (+0200)

My microscope is getting rusty.

I’m not familiar with Pyrenomycetes at all.
By: Andrew Khitsun (Andrew)
2012-04-14 00:55:35 CEST (+0200)

But I’ve picked up a sample of this, although I probably lack the means to do a proper testing (like Hubble telescope :-)

Could be
By: Jason Hollinger (jason)
2012-04-13 22:48:54 CEST (+0200)

Could even be a nonlichenized pyrenomycete — is there definitely algae involved? There are also other genera of pyrenolichens that can have big bulging black perithecia. I’ve never seen a protruding ostiole(?) like this, either.

Thallus is barely perceptible
By: Andrew Khitsun (Andrew)
2012-04-12 04:04:38 CEST (+0200)

But I think those pimples are characteristic of Pyrenula. On the other hand, I see pictures of those pimples with what looks like holes up on top. These ones look like Hersheys Kisses, with small protrusion at the very tip of the pimple.

Created: 2012-04-12 03:58:38 CEST (+0200)
Last modified: 2015-12-15 05:42:19 CET (+0100)
Viewed: 109 times, last viewed: 2019-03-27 03:58:42 CET (+0100)
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