Exsudoporus frostii
Exsudoporus frostii is a bolete fungus first described scientifically in 1874. The mushrooms have tubes and pores instead of gills on the underside of their caps. The species is distributed in the eastern United States from Maine to Georgia, and in the southwest from Arizona extending south to Mexico and Costa Rica.
About Exsudoporus frostii in brief
Exsudoporus frostii is a bolete fungus first described scientifically in 1874. The mushrooms have tubes and pores instead of gills on the underside of their caps. The species is distributed in the eastern United States from Maine to Georgia, and in the southwest from Arizona extending south to Mexico and Costa Rica. Although the mushrooms are considered edible, they are generally not recommended for consumption because of the risk of confusion with other poisonous red-pored, blue-bruising boletes. The shape of the cap of the young fruit body ranges from a half sphere to convex, later becoming broadly convex to flat or shallowly depressed, with a diameter of 5–15 cm. As it ages it can uncurl and turn upward. The flesh has a variable reaction in staining in response to bruising, so some specimens may turn deep blue almost immediately, while others may turn blue slowly. In Mexico, its vernacular name is panza agria, which translates to “sour belly’” or “the apple bolete’s” cap.
In moist conditions, the cap surface is sticky as a result of its cuticle, which is made of gelatinized hyphae. The color is bright initially, but fades with age. Young have a whitish bloom on the cap, but with age the cap is up to 2.cm thick, and ranges in color from pallid yellow to lemon yellow. The pores are small, circular, and deep, until old age. The pore surface is 9–15mm deep, deep, and yellow olivaceous yellow, turning blue when bruised, turning dingy yellow when old, until it becomes palid yellow. It can be distinguished from other superficially similar red-capped boletes by differences in distribution, associated tree species, bluing reaction, or morphology. In 1945, Rolf Singer described a boletes he found in Florida; although he originally described it as a subspecies of B. frostii, he later considered the differences between the taxa significant enough to warrant publishing Boletus floridanus as a unique species.
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This page is based on the article Exsudoporus frostii published in Wikipedia (as of Oct. 29, 2020) and was automatically summarized using artificial intelligence.
