Observation 171122: Tylopilus P. Karst.

When: 2014-07-24

Collection location: Lubec, Maine, USA [Click for map]

Who: Terri Clements/Donna Fulton (pinonbistro)

No specimen available

On mossy ground in mixed woods. Cap 3 cm., red brown with yellowish fibrils, cream colored tiny irregular pores bruising gray brown, cream tubes, reddish brown stem. Flesh of cap and stem is white bruising pink to brown at base of stem. Mild odor and taste. KOH on cap dark reddish brown; KOH on pore surface negative; KOH on flesh pale yellow. Iron salts on flesh blue green. Ammonia on cap red turning orange.


tiny whitish pores
white flesh bruising pinkish to brownish at base of stem

Proposed Names

3% (2)
Recognized by sight: white flesh staining brownish, whitish pores staining brownish, reddish brown stem, white mycelium, chemical tests as noted above, trying for spore print but may not get it
Used references: “North American Boletes” by Bessette-Roody-Bessette
Based on chemical features: see above
-3% (2)
Recognized by sight: Pale yellow tubes (when young) bruising bluish-gray
-3% (2)
Recognized by sight
57% (1)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
We have oaks too
By: Terri Clements/Donna Fulton (pinonbistro)
2014-07-25 15:40:56 CEST (+0200)

just not in the same numbers as maple and birch. There was no bluing on this specimen. The context turned pinkish then brown. There was some graying on the white pore surface. These and other features are consistent with Key E-1, page 43 of “North American Boletes” by Bessette, Roody, Bessette. The key led to T. badiceps and T. ferrugineus. Not sure which as there was only one specimen and it was immature.


By: I. G. Safonov (IGSafonov)
2014-07-25 04:59:53 CEST (+0200)

is associated only with oaks — it would not grow in your woods. The pore/tube color and bruising in the last picture point away from your ID.
Chemical reactions are not supposed to be used as primary identification tools.

These were on mossy ground
By: Terri Clements/Donna Fulton (pinonbistro)
2014-07-25 04:27:29 CEST (+0200)

in mixed woods that include maple, birch and beech—all were nearby.

The chemical reactions favor T. ferrugineus.


By: I. G. Safonov (IGSafonov)
2014-07-25 04:22:08 CEST (+0200)

and similar Tylopili are not mycorrhizal with hemlock/conifers. The pictured habitat, however, is typical of where B./X. badius grows.

Created: 2014-07-25 02:59:53 CEST (+0200)
Last modified: 2014-07-25 15:42:27 CEST (+0200)
Viewed: 66 times, last viewed: 2017-06-18 19:04:10 CEST (+0200)
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