Gastroboletus is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of fungi in the family Boletaceae

Boletaceae

Boletaceae are a family of mushrooms, primarily characterized by developing their spores in small pores on the underside of the mushroom, instead of gills, as are found in agarics. Nearly as widely distributed as agarics, they include the Cep or King Bolete , much sought after by mushroom hunters...

. Species in the genus have misshapen caps

Pileus (mycology)

The pileus is the technical name for the cap, or cap-like part, of a basidiocarp or ascocarp that supports a spore-bearing surface, the hymenium. The hymenium may consist of lamellae, tubes, or teeth, on the underside of the pileus...

, poorly developed or absent stipes

Stipe (mycology)

thumb|150px|right|Diagram of a [[basidiomycete]] stipe with an [[annulus |annulus]] and [[volva |volva]]In mycology a stipe refers to the stem or stalk-like feature supporting the cap of a mushroom. Like all tissues of the mushroom other than the hymenium, the stipe is composed of sterile hyphal...

, and are often buried or partially buried. Gastroboletus has tubes arranged irregularly, rather than vertically as in typical bolete

Bolete

A bolete is a type of fungal fruiting body characterized by the presence of a pileus that is clearly differentiated from the stipe, with a spongy surface of pores on the underside of the pileus...

s. The edibility of most species is unknown, and those known to be edible are not highly rated.

Species

• Gastroboletus amyloideus
  Gastroboletus amyloideus
  Gastroboletus amyloideus is a species of fungus in the family Boletaceae. The species was first described scientifically in 1969 by American mycologist Harry Delbert Thiers. Characterized by its amyloid spore staining reaction, the fungus is found in California....
  
  
• Gastroboletus boedijnii
• Gastroboletus brunneus
• Gastroboletus citrinobrunneus
• Gastroboletus dinoffii
• Gastroboletus doii
• Gastroboletus fascifer
• Gastroboletus molinae
• Gastroboletus subalpinus
  Gastroboletus subalpinus
  Gastroboletus subalpinus is a species of fungus in the family Boletaceae. The species was first described scientifically in 1969 by American mycologists Harry Delbert Thiers and James M. Trappe. It is found in California and Oregon....
  
  
• Gastroboletus turbinatus
• Gastroboletus valdivianus
• Gastroboletus vividus
• Gastroboletus xerocomoides
  Gastroboletus xerocomoides
  Gastroboletus xerocomoides is a species of fungus in the family Boletaceae. The species was first described scientifically in 1969 by American mycologists Harry Delbert Thiers and James A. Trappe. It is found in California, usually near Red Fir trees ....