Habitat: Growing under pines in a mixed hardwood/pine forest in Northwest Georgia.

Pore surface: pale gold, turning more brown with age/damage

Flesh: White, slightly staining blue within 5-10 seconds.

Stipe: Pale gold, its entire length covered in red glandular dots. No veil remnants visible.

Upper surface: Pale gold, convex.

Spore print: olive brown


Proposed Names

46% (2)
Recognized by sight
56% (1)
Recognized by sight
Used references: obs 256867; obs 257442; obs 257499 (sequenced)

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Add Comment
Thank you
By: Lisa Kimmerling (L_Kimmerling)
2017-11-12 05:15:12 PST (-0800)

Thanks so much for the detailed explanation. As for the taxonomy, you are not boring me at all. I love to learn, so I don’t mind! I cannot promise I won’t have further questions (as I am no expert), but I’m always open for a lecture! ;)

By: I. G. Safonov (IGSafonov)
2017-11-09 17:57:27 PST (-0800)

Well, many earlier descriptions say hirtellus doesn’t blue. The most recent description in Bessettes’ BENA allows for some “weak and erratic bluing” of the context. Two of my collections from NJ (same spot, different days) showed bluing of the flesh, but it wasn’t as strong as that of your material. DNA sequencing of one of those collections matched it to hirtellus accessions used in the recent global suillus paper by Nguyen et al. in Mycologia.
I don’t want to bore you with suillus taxonomy, but genetically hirtellus is in the “Tomentosus Group” that includes two more similar-looking taxa from the eastern USA. Tomentosus (associated with hard pines) consistently blues in both the flesh and pores, and punctipes (associated with soft pines) doesn’t blue at all. Hirtellus is common in the south, whereas the other two don’t go further down than NC.
Of course it’s possible you have something else. For example, Dario Z., who is VA, posted a number of hirtellus-like collections with bluing (sometimes intensely) flesh: obs 257608, obs 290070, obs 290369.

By: Lisa Kimmerling (L_Kimmerling)
2017-11-09 15:33:13 PST (-0800)

@IGSafonov: So bluing of the flesh has been recorded for S. hirtellus?