Aureoboletus betula
Species of fungus
From Wikipedia, the free encyclopedia
Aureoboletus betula is a species of mushroom producing fungus in the family Boletaceae.[1] It is commonly known as the shaggy-stalked bolete.[2]
| Aureoboletus betula | |
|---|---|
| |
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Boletales |
| Family: | Boletaceae |
| Genus: | Aureoboletus |
| Species: | A. betula |
| Binomial name | |
| Aureoboletus betula | |
| Synonyms | |
|
Boletus betula Schwein. (1822) | |
| Aureoboletus betula | |
|---|---|
| Mycological characteristics | |
 | Pores on hymenium |
 | Cap is convex |
 | Hymenium is adnate |
 | Stipe is bare |
 | Spore print is olive |
 | Ecology is mycorrhizal |
 | Edibility is edible |
Taxonomy
It was first described in 1822 by the German-American mycologist Lewis David de Schweinitz and classified as Boletus betula.[3] It has been reclassified many times over the years. In 2004, the Austrian mycologist Egon Horak's classified it as Heimioporus betula.[4][5] In 2020, it was reclassified as Aureoboletus betula by the mycologists Michael Kuo and Beatriz Ortiz-Santana.[6]
Etymology
The specific epithet 'betula', meaning birch, does not an imply a preference for growing under birch trees but to their shaggy bark, which the stipe of this species is reminiscent of.[7]
Description
The cap is 2–5 centimetres (3⁄4–2 in) wide, convex and broadening with age.[2] It starts golden yellow, discolouring to brownish yellow or reddish orange. The texture is sticky and the flesh is yellow.[8] There are 1–2 pores every millimetre with tubes that are 1.5 cm deep. They are bright yellow, turning greenish yellow with age.[8]
The stem is 8–15 cm (3+1⁄4–6 in) tall and 1–2 cm thick.[2] It is distinctly textured with deep ridges and a slightly swollen and rooting base. The stem flesh is white, staining pink when exposed to air.[8] The taste and smell are indistinct.[8]
The spores are ellipsoid, measuring 16–24 x 7–12 μm. The spore print is olive.[8]
Similar species
Outside of its genus, it resembles Butyriboletus frostii, which is relatively more red and squat.[2]
Distribution and habitat
It is found under oaks, or in mixed woods of pine and oak, primarily in the southern Appalachians, from July to September.[2]
