Rubroboletus rhodoxanthus

Rubroboletus rhodoxanthus
Scientific classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Boletales
Family: Boletaceae
Genus: Rubroboletus
Species: Rubroboletus rhodoxanthus
Binomial name
Rubroboletus rhodoxanthus
(Krombh.) Kuan Zhao & Zhu L.Yang (2014)
Synonyms
  • Boletus sanguineus var. rhodoxanthus Krombh. (1836)
Rubroboletus rhodoxanthus
View the Mycomorphbox template that generates the following list

Mycological characteristics

pores on hymenium
cap is convex
stipe is bare
spore print is olive-brown
ecology is mycorrhizal
edibility: poisonous

Rubroboletus rhodoxanthus is a fungus of the genus Rubroboletus, known for many years as Boletus rhodoxanthus until 2014. It is a rare, inedible bolete found in warm deciduous forests of southern Europe mainly under oak and beech, on chalky soil.

Description

Rubroboletus rhodoxanthus produces a large, colourful fruit body. The cap is convex, coloured mostly whitish-grey, and flushed with pink especially towards the margin. The cap expands with maturity and may exceed 20 cm in diameter. The tubes are initially yellow in immature specimens, soon becoming bright red, and stain blue when damaged.

The stem is bulbous when young, but becomes more slender with maturity. It bears a dense carmine network covering an orange-yellow background. The flesh is bright yellow, turning blue when cut but only in the cap and not in the stem base. It has a mild taste.

The spores are olive-brown in colour, ellipsoid to spindle shaped, sized 10–15 by 4–5.5 μm.

Distribution and habitat

Rubroboletus rhodoxanthus is a generally rare species found in southern Europe. It is common in Cyprus under golden oak (Quercus alnifolia).[1] It is considered critically endangered in the Czech Republic.[2]

Edibility

Rubroboletus rhodoxanthus is poisonous and unsuitable for consumption, although its toxicity varies significantly from region to region depending on the substrate.

Similar species

See also

Wikimedia Commons has media related to Boletus rhodoxanthus.

References

  1. Loizides M (2011). "Quercus alnifolia: The Indigenous Golden Oak of Cyprus and its Fungi". Field Mycology 12 (3): 81–88. doi:10.1016/j.fldmyc.2011.06.004.
  2. Mikšik M. (2012). "Rare and protected species of boletes of the Czech Republic". Field Mycology 13 (1): 8–16. doi:10.1016/j.fldmyc.2011.12.003.
This article is issued from Wikipedia - version of the Saturday, November 21, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.