Observation 208838: Suillus weaverae (A.H. Sm. & Shaffer) Kretzer & T.D. Bruns

When: 2015-07-03

Collection location: Grand Lake Stream Region, Maine, USA [Click for map]

Who: Terri Clements/Donna Fulton (pinonbistro)

No specimen available

Proposed Names

-86% (1)
Recognized by sight: dull yellow brown cap up to 10 cm with reddish areas, sticky when wet; large yellow angular pores; yellow stem with reddish brown glandular dots; yellowish context reddening where bug eaten, paler in cap; on ground under eastern white pine, hemlock and birch
Used references: NA Boletes by BRB and obs 174659
29% (1)
Recognized by sight: Revisited the grouping, see new photos added 7/9/15 and comment below
57% (1)
Eye3 Eyes3
Recognized by sight: proposed name for NA S. granulatus
Used references: Mycologia. 2016 Oct 19. pii: 16-106. [Epub ahead of print]
Phylogenetic assessment of global Suillus ITS sequences supports morphologically defined species and reveals synonymous and undescribed taxa.
Nguyen N1, Vellinga EC2, Bruns TD3, Kennedy P4.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
First time seeing old S. granulatus
By: Terri Clements/Donna Fulton (pinonbistro)
2015-07-10 05:55:05 PDT (-0700)

so I didn’t realize that those distinctive pinkish buff pores of young S. granulatus become quite yellow in age and the white stem turns yellow as well. The cap fades from brown to mottled brown to mottled yellow brown.

Rather old specimens
By: Terri Clements/Donna Fulton (pinonbistro)
2015-07-04 12:17:30 PDT (-0700)

and missing a couple of key features: bright yellow cap with red scales/streaks and partial veil remnants on the cap margin. Also the cap flesh appears almost white rather than yellow. Perhaps this is something other than S. americanus? Any ideas would be appreciated.


PS S. americanus I’ve found have had partial veil remnants at the margin even in older specimens.

Created: 2015-07-04 11:59:23 PDT (-0700)
Last modified: 2017-04-04 17:02:42 PDT (-0700)
Viewed: 82 times, last viewed: 2017-10-29 16:40:03 PDT (-0700)
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