Observation 169360: Xerocomus hortonii (A.H. Sm. & Thiers) Manfr. Binder & Besl

When: 2014-07-09

Collection location: Red Rock, Pennsylvania, USA [Click for map]

Who: Phil Yeager (gunchky)

No specimen available

Terrestrial in mixed woods. Ash, Hickory, some Oak and Hemlock. Poor soil.

Proposed Names

74% (3)
Used references: B.R.B.
Based on microscopic features: Pilepellis shows blue-green flash with Ammonia

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Looking at available photos of hortonii…
By: Dave W (Dave W)
2014-07-11 08:19:18 CDT (-0400)

examples with stipe completely pale and relatively lacking in scruffiness are more common than I had thought.

According to B. R. and B
By: Phil Yeager (gunchky)
2014-07-10 16:49:15 CDT (-0400)

B. hortonii occasionaly has reddish tones near the base; not always. In any event it is a nifty looking mushroom, and I’m looking forward to eating it.

My concept of B. hortonii…
By: Dave W (Dave W)
2014-07-09 21:53:25 CDT (-0400)

has been that, except for the deeply wrinkled cap, it otherwise resembles B. subglabripes. So the whitish stipe without reddish dots/scruffiness is a bit different than what I’d expect. But the other observable traits (including the blue-green ammonia flash on the cap) match very well with hortonii.

My one spot for this type is an oak/hickory dominated hardwood forest.

Here’s another recent post… with a rather pale unadorned stipe obs 169092

Created: 2014-07-09 20:12:02 CDT (-0400)
Last modified: 2016-02-19 07:50:04 CST (-0500)
Viewed: 95 times, last viewed: 2017-08-29 05:27:14 CDT (-0400)
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