Observation 50961: Hebeloma theobrominum Quadr.

When: 2010-08-14

Collection location: Ježkovice, Czech Republic [Click for map]

Who: Douglas Smith (douglas)

Specimen available

Found under mixed hardwoods, mostly oak.

With a raphinoid odor.

Adding some micro-details:

The first micro-shot is of the gill edge at 400x in Meltzer’s. The cheilocystidia are cylindrical with blunt ends, some with slightly inflated edges, some bent at the base. No pleurocystidia obs.

The second micro-shot is of spores from the gill at 1000x in Meltzer’s. The spores are ellipsoid, pointed, lightly roughened, dextrinoid and no germ pore. Apr. size is 9 × 4.5 um.

Putting this together with the key in Funga Nordica I get Hebeloma theobrominum. It seems the main feature that separates this species is the narrow spores. Which seems kinda slight… otherwise they look a lot like H. velutipes.

Proposed Names

86% (1)
Eye3 Eyes3
Recognized by sight
Used references: Funga Nordica
Based on microscopic features: As described in the text.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2010-08-21 15:50:04 CEST (+0200)
Last modified: 2010-09-03 12:26:23 CEST (+0200)
Viewed: 67 times, last viewed: 2016-10-21 19:45:03 CEST (+0200)
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