Observation 178365: Scleroderma areolatum Ehrenb.

Proposed Names

29% (1)
Recognized by sight
75% (4)
Recognized by sight: Small size, flat areolate scales, thin wall, elongated base with white cords binding the soil.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Old and dry
By: Daniel B. Wheeler (Tuberale)
2014-09-16 04:35:41 PDT (-0700)

definately has an impact on KOH reaction, at least in my experience. Also affects stem production. KOH does react, but reaction may be slowed by environmental conditions and dessication. Sometimes KOH reaction is barely noticeable.

I have found S. verrucosum along the Oregon coast at Cape Lookout. Collection was verified by NATS scientific advisor (Matt Trappe?). Collection came from an atypically hot summer, too. Don’t think much if any has been found further north, though.

Then again, I don’t do as much collectimg as I’d like in eastern Oregon or Washington.

I applied KOH to it
By: Andrew Khitsun (Andrew)
2014-09-15 22:36:33 PDT (-0700)

Kuo’s guide says that S.areolatum is supposed to have a quick changing reaction, but in my case there was no reaction. I wonder though if material age (old in this case, where outer shell is dry and tough) can play a role in how KOH will come out.
The other indicator was that all of the fruit bodies I dug up had a stem, and S.areolatum is supposed to have a stem only occasionally.
Also Kuo says “primary tropical and subtropical” leaving room for northern distribution.

S. verrucosum
By: Daniel B. Wheeler (Tuberale)
2014-09-15 22:24:57 PDT (-0700)

unlikely, Andrew, as it is fruiting in a spot neither “tropical or subtropical”. That makes it S. areolatum, I think.

I arrived at Scleroderma verrucosum using Kuo’s keys
By: Andrew Khitsun (Andrew)
2014-09-15 13:24:35 PDT (-0700)

Is that the one you had in mind? My KOH didn’t show much change on the surface.

Hardwoods with basswood, hickory, other decidious trees. No conifers nearby.
By: Andrew Khitsun (Andrew)
2014-09-14 23:24:34 PDT (-0700)

I can’t see reddening, but that doesn’t mean much – I am no friends with colors :-(

Mycorrhizal with which trees, Andrew?
By: Daniel B. Wheeler (Tuberale)
2014-09-14 22:19:34 PDT (-0700)

Thin peridium, lack of warts exceeding 2mm on peridium. Using Kuo’s Key to Scleroderma, comes down to whether associated with conifers or hardwoods.

BTW, showing the cut surface, showing especially the cut peridium (outer shell) will either show reddening or no reddening, which is important as well.

Small fruit bodies
By: Andrew Khitsun (Andrew)
2014-09-14 19:30:01 PDT (-0700)

The biggest one is an inch and half in diameter. Black powder-spores inside. Fruitbody wall is very thin (at least at this stage when mushroom is sporing).

Created: 2014-09-14 19:23:57 PDT (-0700)
Last modified: 2015-04-16 06:58:57 PDT (-0700)
Viewed: 42 times, last viewed: 2017-06-18 18:27:38 PDT (-0700)
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