OMS 1000895
Collector(s): Tess Anawalt
Determined: 2015-May-16
Determiner: Michael Beug
Original Determination: Boletus smithii
Habitat: Conifer
Aspect: unknown
Growth Habit: Few
Substrate: Soil
Closest plant: Other
Other Habitat & Locality Notes: Location estimated based on field trip collecting sites
Spore print:
Other Specimen Notes:
Spores: cylindrical, 13.75 × 5, 13.50-15 × 4-5
Basidia: short, stubby.
Determiner Michael Beug indicates that Boletus smithii may be a species complex.
ITS GenBank Number KT968606
LSU GenBank Number KT968656

Species Lists



Proposed Names

-29% (1)
Based on microscopic features: Spores: cylindrical, 13.75 × 5, 13.50-15 × 4-5
Basidia: short, stubby
29% (1)
Recognized by sight: Richard Bishop emailed me to say: “Boletus smithii is actually a late summer / fall species. I think it is more likely that the collection is Boletus rubripes which is usually found in the spring. The microscopic parameters fit B. rubripes just as well if not better and the cap color from what I can tell fits B. rubripes better. This year the conditions may have been similar to late summer so who knows.”
86% (1)
Used references: See BLAST lab report in comments. C. rupripes is current name (17 May 2016).

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= Observer’s choice
= Current consensus


Add Comment
interesting timing. :)
By: Debbie Viess (amanitarita)
2016-05-17 23:20:12 CDT (-0400)

the Suttle Lake OMS foray lab was filled with rubripes (now Caloboletus rubripes) this past weekend. handsome mushroom.

it’s better with bitter.

BLAST results lab report
By: Joseph D. Cohen (Joe Cohen)
2016-05-17 23:07:13 CDT (-0400)

Thanks to Kelli Van Norman and ISSSSP for funding the sampling:

y014 identified as Boletus smithii MO 206192 OMS 1000895
There is a 100% match with Boletus rubripes (Jackson Co., OR), and all 8 B. rubripes in GenBank are 99- 100% similar to y014. For comparison, y014 has an 83% match to the only B. smithii ITS sequence in GenBank. The LSU sequence backs this up. y014 is 99.7% similar to 2 B. rubripes LSU sequences, while only 95% similar to 2 B. smithii LSU.