Observation 108901: Hapalopilus croceus (Pers.) Donk

When: 2012-08-21

Collection location: Silver Spring, Montgomery Co., Maryland, USA [Click for map]

Who: John S. Harper (jsharper)

No specimen available

See full discussion in related observation of same type found on September 4, 2012. Observation number 108665.

Two specimens found several miles apart in a 2 week period. (This observation is the earlier and smaller of the two specimens collected.) Unusual local conditions must have been favorable for this fruiting — I have never found this mushroom before during 7 years of very frequent local collecting. Unusual weather comments: Hot early spring (lousy morel season), some rain end of June, dry very hot summer in early July for about 10 days, more normal rainfall in August. Everything seemed advanced by about 2 weeks in appearance this year.

Both specimens were found on a well-decayed log of indeterminate species.

Bright orange soft pore surface, dull orange brown (maybe “golden”) irregular lumpy pileus (not glabrous). Color and shape somewhat like a Pycnoporus but much larger, pores much larger. Firm but not conk-like. This specimen was 8″ × 9″ × 2.5″ thick. Odor not notable.

KOH on pileus, pores and context produce over about a minute a persistent purplish reaction. See photos of this and the related observation. On the pileus, I might call it reddish purple, but it seems more lilac on the context.

Proposed Names

81% (1)
Eye3 Eyes3
Recognized by sight: See discussion under other observation – 108665
Based on chemical features: KOH

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2012-09-07 02:31:27 CST (+0800)
Last modified: 2012-09-07 02:31:30 CST (+0800)
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