Observation 135313: Panaeolus semiovatus (Sowerby) S. Lundell & Nannf.

When: 2013-05-30

Collection location: Grasslands National Park, Saskatchewan, Canada [Click for map]

49.1992° -107.5629° 849m

Who: Chris Hay (hayfield)

No specimen available

-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)

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thanks Byrain
By: Chris Hay (hayfield)
2013-06-02 16:11:28 EDT (-0400)

Thanks for your helpful input!

By: Byrain
2013-06-02 15:21:49 EDT (-0400)

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 14:32:28 EDT (-0400)

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 14:15:17 EDT (-0400)
Last modified: 2013-06-12 20:52:46 EDT (-0400)
Viewed: 89 times, last viewed: 2018-02-28 17:24:39 EST (-0500)
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