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When: 2008-09-13

Collection location: Madison Heights, Pasadena, California, USA [Click for map]

Who: Jason Hollinger (jason)

Specimen available

Found single fruiting body in mulched flower bed beside Psathyrella candolleana. Might be very faint remnants of fibrillose veil on upper stipe and margi. Not hygrophanous.

Update: spore print dark brown (photo coming), spores somewhere aorund 10 × 5 µm, smooth, with germ pore (photo coming). No cystidia on gill faces, but abundant bowling-pin-shaped thin-walled K- cystidia on gill edges. Pileipellis is… trichoderm maybe? Rather large blocky randomly-arranged cells below the cuticle, transforming rather suddenly into v narrow hyphae parallel to surface, with some hair-like hyphae diverging. Clamp connections present (remarkably obvious in a few places). Nothing was strongly golden in K.


Spore print.
Spores, in water, at 1000×.
Gill section, in water, at 100×.
Section of cuticle, in water, at 1000×.
Cheilocystidia, in water, at 1000×.

Proposed Names

29% (1)
Used references: Going on Douglas’s suggestion of an epithelium.

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Add Comment
Almost, but no dice…
By: Jason Hollinger (jason)
2008-09-14 16:00:35 PDT (-0700)

Gills do look nearly free, but there are one or two still barely attached.

Gill attachment
By: Paul Derbyshire (Twizzler)
2008-09-14 14:32:45 PDT (-0700)

The gills look like they’re free or almost free of the stem. That may be a factor in ID.

Looks like Psathyrella
By: Douglas Smith (douglas)
2008-09-14 12:11:09 PDT (-0700)

With spores that dark, it doesn’t look like Psilocybe or Stropharia or Hypholoma (also since there are no pleurocyst.). In Psathyrella there are a number of species that have an epithellium with thin fiberous hyphae on the surface, which maybe you have here. You should check the Psathyrella monograph, without the pleurocystidia something might come up. I just checked on a little guy with pleurocyst., and it was a bit too confusing to figure out a species…

There also seems to maybe be mottling on the on the gill face, Panaeolus was a section of the Psathyrella monograph, you can check there also. I can’t remember if the section Panaeolus was in the part without pleurocyst.

Need spore print color
By: Paul Derbyshire (Twizzler)
2008-09-13 22:36:32 PDT (-0700)

It might be a Pluteus, perhaps P. aurantiorugosus given the cap color and granules, growing from buried wood.

Its location on the ground suggests other things. Non-white gills suggest Amanita and friends unlikely; no veil remnants at stem base likewise and also rule out Volvariella.

A spore print would help enormously to narrow things down.