Observation 11554: Hypholoma marginatum (Pers.) J. Schröt.
When: 2006-10-04
No herbarium specimen

Notes: Although these seem fairly distinctive, I haven’t been able to even get them to genus, with Panaeolus or Psilocybe appearing the most likely candidates.
The cap widths are up to about 2.3 cm. and stems up 4.5 cm. The spore print is dark purple and I estimate the elliptical spores to be about 8.4um X 6.0um.
They appeared to be growing on what looked like old crumbly dung of some sort.
Any ideas???

Proposed Names

32% (2)
Eye3
Recognized by sight
47% (2)
Recognized by sight: Thick walled spores, but should show a germ pore. First guess is H. marginatum.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Hypholoma marginata seems a reasonable guess.
By: Ron Pastorino (Ronpast)
2008-09-25 14:14:52 BRT (-0300)
I had eliminated certain genera because the spores were definitely not brown. At first I had a hard time deciding whether to call them dark purple or purple-black. The photo makes them appear less dark. Hypholomas can be purple-brown which may work if one is looking at a less dense print mass. Darv’s suggesting of Hypholoma marginata seems reasonable as the spores did have a small germ pore and were about the right size and shape.
Little brown job
By: Douglas Smith (douglas)
2008-09-25 11:52:52 BRT (-0300)

Without more, it can just be too many things. If it is really a dark spore print that would suggest Psathyrella, Panaeolus, Psilocybe, and here Hypholoma. I’m not always that positive about dark brown vs. brown, so I’d also keep open Conocybe, Pholiotina, Pheogalera, maybe Agrocybe… and those are just the popular genera. At least it does appear to be a smooth dark spore with a germ pore.

Haven’t got more
By: Ron Pastorino (Ronpast)
2008-09-25 01:34:34 BRT (-0300)
Yes, those are 2 year old spores under tape and no, I don’t have any dried material to do more microscope work on. I’d be satisfied with just some happy-go-lucky educated guesses.
Need more really -
By: Douglas Smith (douglas)
2008-09-24 23:42:45 BRT (-0300)

The spores are all collapsed, why is that? Were they from an old dried out spore print? Do you still have the dried material? You need to look at the cap surface and see if it is cellular or a cutis, and get the ave. shape of the cheilocystidia, for id purposes spores from the gills should be ok.

That might be enough to get to genera, to species you’ll probably need more.

Created: 2008-09-24 22:57:45 BRT (-0300)
Last modified: 2008-09-24 22:57:45 BRT (-0300)
Viewed: 143 times, last viewed: 2016-12-14 20:45:01 BRST (-0200)