Boletus coniferarum

{{Short description|Species of fungus}}

{{Speciesbox

| image = Boletus coniferarum 178294.jpg

| genus = Boletus

| species = coniferarum

| authority = Lebedeva (1949)

}}

Boletus coniferarum, the conifer bolete, is a mushroom of the genus Boletus native to North America. The species is inedible{{cite book |last=Phillips |first=Roger |title=Mushrooms and Other Fungi of North America |year=2010 |publisher=Firefly Books |location=Buffalo, NY |isbn=978-1-55407-651-2 |page=264}} due to its extremely bitter taste.{{cite book|last1=Trudell|first1=Steve|url=https://books.google.com/books?id=WevHvt6Tr8kC|title=Mushrooms of the Pacific Northwest|last2=Ammirati|first2=Joe|publisher=Timber Press|year=2009|isbn=978-0-88192-935-5|series=Timber Press Field Guides|location=Portland, OR|pages=215–216}}

The semi-velvety cap is grayish and the yellow tubes stain dark blue. The stipe is yellowish, darkening in age, and sometimes larger near the base. The flesh is buff and stains blue.

Boletus frustosus is similar, but has reddish hues at the bottom of the stipe, as does Cyanoboletus pulverulentus, which stains a greener hue than B. coniferarum and tastes mild.