Observation 57864: Pluteus hispidulus (Fr.) Gillet
When: 2010-11-02
No herbarium specimen

Notes: Pleurocystidia absent.

Cheiocystidia rare, deeply imbedded in the gill edge.

Spores eliptical, (4.5) 5 – 7 (8) x 5 – 6 micrometers.

Pileipellis a trichoderm with brown elements.

Images

117929
117930
117931
117932
117933
117934
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117936
pleurocystidia absent
117937
cheilocystidia
117938
cheilocystidia
117939
cheilocystidia
117940
spores
117941
spores
117942
spores
117943
basidia
117944
pileipellis
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pileipellis
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pileipellis
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pileipellis
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pileipellis
117949
pileipellis
117950
pileipellis

Proposed Names

17% (5)
Recognized by sight
21% (3)
Eye3 Eyes3
Recognized by sight: Cap small, dark brown gray at center, grayish at margin, free gills, fibrillose cap, stem wite, shiny, slightly enlarged at the base
Used references: Flora Agaricina Neerlandica page 40
Based on microscopic features: Spore size and shape matches, pileipellis a trichoderm with tapering brown elements, pleurocystidia absent.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Tatiana
By: Christian (Christian Schwarz)
2010-11-04 15:48:03 CST (-0500)

the spore shape differs greatly between Pluteus and Entoloma – but you are right – it’s easy to be fooled when you find a lignicolous Entoloma.

Pluteus hispidulus
By: Alan Rockefeller (Alan Rockefeller)
2010-11-03 14:47:34 CST (-0500)

Pluteus hispidulus is a good match except the description says the cheilocystidia is crowded, and they were rare in this sample.

If this were Europe…
By: Douglas Smith (douglas)
2010-11-03 07:50:08 CST (-0500)

If it was found in Europe I might suggest Pluteus hispidulus, but since it is Cali. not sure what to say. I don’t think these trichoderm Pluteus are studied much at all in the US?

an Entoloma (Leptonia)?
By: Tatiana Bulyonkova (ressaure)
2010-11-03 06:01:30 CST (-0500)

reminds me of one of those tiny, rare wood-inhabiting Entoloma/Leptonia species (e.g. the Entoloma chytrophylum I’ve posted, except that the latter is blue and not brownish-black)… Don’t see any contradictions in the microstructures info.

Created: 2010-11-02 23:33:41 CST (-0500)
Last modified: 2010-11-04 15:55:21 CST (-0500)
Viewed: 238 times, last viewed: 2017-08-27 13:49:28 CDT (-0400)
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