''Exsudoporus floridanus'' is a species of edible bolete mushroom in the family Boletaceae. In 1945, American mycologist

Rolf Singer Rolf Singer (June 23, 1906 – January 18, 1994) was a Germany, German-born mycologist and one of the most important Taxonomy (biology), taxonomists of gilled mushrooms (agarics) in the 20th century. After receiving his Ph.D. at the University ...

described a species he found in Florida during his 1942–3 tenure of a Guggenheim Memorial Fellowship. He originally described it as a

subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...

of the eastern North American species ''

Boletus frostii ''Exsudoporus frostii'' (formerly ''Boletus frostii''), commonly known as Frost's bolete or the apple bolete, is a bolete fungus first described scientifically in 1874. A member of the family Boletaceae, the mushrooms produced by the fungus ...

'', but later considered it worthy of distinct species status in a 1947 publication. Based on morphological and phylogenetic data, Vizzini and colleagues transferred this species to a newly described genus '' Exsudoporus'' in 2014. Due to lack of sufficient sequences, Wu et al. (2016) were reluctant to accept ''Exsudoporus'' and considered it a synonym of ''

Butyriboletus ''Butyriboletus'' is a genus of fungi in the family Boletaceae. The genus was circumscribed in 2014 by mycologists David Arora and Jonathan L. Frank to accommodate "butter bolete" species that were shown by molecular phylogenetics, molecular anal ...

'', so they proposed a new combination ''Butyriboletus floridanus''. However, following phylogenetic and morphological analyses clearly resolved ''Exsudoporus'' as a monophyletic, homogenous and independent genus that is sister to ''Butyriboletus''. ''Exsudoporus floridanus'' differs from ''Exsudoporus frostii'' in having a lighter cap color and in the texture of the cap surface: the subspecies is tomentose (covered with dense, short, soft, matted hairs) or velutinous (like velvet), compared to the relatively smooth surface of ''E. frostii''. Singer notes that although the physical characteristics between the two taxa may be blurred and are hard to define, the area of origin is a reliable indicator of subspecies status. ''E. floridanus'' is found on shaded lawns and

scrubland Shrubland, scrubland, scrub, brush, or bush is a plant community characterized by vegetation dominance (ecology), dominated by shrubs, often also including grasses, Herbaceous plant, herbs, and geophytes. Shrubland may either occur naturally or ...

in open oak stands in non- tropical regions of Florida, typically on grassy or sandy soil. It grows under or near several oak species, including

Chapman oak ''Quercus chapmanii'', commonly referred to as the Chapman oak, is a species of oak that grows in the southeastern United States. Description ''Quercus chapmanii'' is a shrub or small tree occasionally reaching a height of 6 meters (20 feet) but ...

(''Quercus chapmanii''), swamp laurel oak (''Q. laurifolia''), and southern live oak (''Q. virginiana''), and it fruits between May and October.

Edibility

''Exsudoporus floridanus'' is said to be edible but bitter, tasting slightly acidic, akin to lemons. It is known to cause

gastric upset Indigestion, also known as dyspepsia or upset stomach, is a condition of impaired digestion. Symptoms may include upper abdominal fullness, heartburn, nausea, belching, or upper abdominal pain. People may also experience feeling full earlier ...

in some who consume it.

References

External links

* {{Taxonbar, from=Q41712559 Boletaceae Edible fungi Fungi described in 1948 Fungi of North America Fungus species

Edibility

See also

References

External links