Hortiboletus rubellus
| Hortiboletus rubellus | |
|---|---|
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| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Boletales |
| Family: | Boletaceae |
| Genus: | Hortiboletus |
| Species: | H. rubellus |
| Binomial name | |
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Hortiboletus rubellus (Krombh.) Simonini, Vizzini & Gelardi (2015) |
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| Synonyms | |
| Hortiboletus rubellus | |
|---|---|
| Mycological characteristics | |
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pores on hymenium |
 
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cap is convex or flat |
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stipe is bare |
 
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spore print is olive to brown |
 
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edibility: edible but not recommended |
cap is convex
spore print is olive
edibility: edible
Hortiboletus rubellus, commonly known as the ruby bolete, is a small, dainty, brightly coloured member of the family Boletaceae, with a reddish cap and stipe, and yellow pores. Like many boletes, it stains blue when cut or bruised. It is found in deciduous woodland in autumn. There is some question over its edibility, and it is reportedly of poor quality with a taste of soap. Until 2015, the species was known as Boletus rubellus.
Boletus rubellus was one of the pored basidiomycetes to be placed in the genus Xerocomus in the past, and is still regarded as such in some texts. The previously commonly used binomial name Boletus versicolor (Rostk.), published in 1844, is now reduced to synonymy as it postdates the current name by German mycologist Julius Vincenz von Krombholz which dates from 1836. Its present specific epithet rubellus is Latin for "somewhat red". The fungus was transferred to the new genus Hortiboletus in 2015, following molecular evidence indicating its genetic dissimilarity to Boletus.
This mushroom has a cap that is scarlet to raspberry red when young, with a dry velvety texture. The extreme margin often has a pale yellow or white band around it, (as in the photograph on the right) and it discolours darker, and dirtier with age. It is a small bolete, with the cap being rarely over 6 centimetres (2.4 in) in diameter. The pores are small; pale yellow, and bruise slowly. Sometimes tapering, the stem is slender and long, and may reach 7.5 cm (3.0 in). It is lemon yellow at the apex, but red elsewhere, and has a tendency to split or sheer vertically. The flesh is straw-coloured in the cap, and stains slowly blue over the tubes when cut. The flesh of the stem is pale yellow at the apex and yellow further down. At the stem base, the flesh may have a distinct spot of brick-red or orange. The tubes and pores are large and lemon-yellow, and may be greenish tinged when older. The spore print is olive. It smells pleasant, but indistinct, and is said to taste slightly soapy.
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Wikipedia