Observation 135313: Panaeolus semiovatus (Sowerby) S. Lundell & Nannf.
When: 2013-05-30
(49.1992° -107.5629° 849m)
No herbarium specimen

Notes: -cap shiny (not viscid) like a turtle shell
-black spores when touched gills below with finger
-veil remnants present (strings from cap to stalk, black spore coated “ring”
-growing on bison (buffalo) dung in short grass area
-recently several days of rain, found on cloudy on-off drizzling day
-similar (same?) species found in other parts of park, including East Block on cow dung (not bison)
-Note: could not collect specimen because from a national park and have not obtained a permit

Other ideas/ notes:
Panaeolus campanulatus (group)
-caps are darker than observed here
-sometimes toothlike veil remnants (may have been present here but dried/ shriveled underneath?)
P. semiovatus
-caps should be smooth or viscid (not as observed here) and pale (relatively, as observed)
-flimsy ring on stem
-horse dung
P. retirugis
-caps wrinkled/ reticulated
-horse dung

Proposed Names

-54% (3)
Used references: Mushrooms Demystified 2nd Ed. (Arora 1986) (under Panaeolus campanulatus)

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thanks Byrain
By: Chris Hay (hayfield)
2013-06-02 13:11:28 PDT (-0700)

Thanks for your helpful input!

By: Byrain
2013-06-02 12:21:49 PDT (-0700)

definitely have a veil/annulus on the stipe and I would think they could grow on lots of different kinds of herbivorous dung. The viscid pileus, robust/fleshy specimens & general lack of pigment also points to subgenus Anellaria which as far as I am aware contains only P. semiovatus & P. antillarum, the latter does not have a veil.

P. semiovatus possibility
By: Chris Hay (hayfield)
2013-06-02 11:32:28 PDT (-0700)

I think the cap colour fits P. semiovatus well. Would you say that it does indeed have a ring here and is not exclusive to horse dung? I’m inclined to agree then.

Created: 2013-06-02 11:15:17 PDT (-0700)
Last modified: 2013-06-12 17:52:46 PDT (-0700)
Viewed: 84 times, last viewed: 2017-06-15 23:03:27 PDT (-0700)
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