''Rubroboletus rubrosanguineus'' is a species of bolete fungus in the family Boletaceae that is found in Europe.

Taxonomy

The bolete was first described from the former

Czechoslovakia , rue, Чеськословеньско, , yi, טשעכאסלאוואקיי, , common_name = Czechoslovakia , life_span = 1918–19391945–1992 , p1 = Austria-Hungary , image_p1 ...

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 ''Boletus splendidus'' (now '' Boletus legaliae''), and later promoted to species status (as ''Boletus rubrosanguineus'') by Jean-Louis Cheype in 1983. Its species name comes from the

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

words ''ruber'' "red" and ''sanguineus'' "bloody". It was transferred to the new genus ''

Rubroboletus ''Rubroboletus'' is a genus of bolete fungi in the family Boletaceae. It was circumscribed by Chinese mycologists in 2014 with '' Rubroboletus sinicus'' as the type species. Species are characterized by having a reddish cap surface, yellow tub ...

'' in 2014 along with several allied reddish, blue-staining bolete species.

Molecular A molecule is a group of two or more atoms held together by attractive forces known as chemical bonds; depending on context, the term may or may not include ions which satisfy this criterion. In quantum physics, organic chemistry, and bioche ...

analysis of eight of the member species found it was most closely related to '' Rubroboletus sinicus'' and formed a larger

clade A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, ...

with '' R. satanas'' and '' R. pulchrotinctus''

Description

The large stout

fruit bodies The sporocarp (also known as fruiting body, fruit body or fruitbody) of fungi is a multicellular structure on which spore-producing structures, such as basidia or asci, are borne. The fruitbody is part of the sexual phase of a fungal life cyc ...

have light to dark grey or grey-brown caps, often with pinkish margins, that may reach 15 cm (6 in) in diameter. Initially hemispherical (dome-shaped), they become convex to flat as they mature. The pores are red, the tubes yellow and the flesh is pale yellow, and all become blue when bruised. The stout stipe is bulbous or cylindrical at the base and yellow at the top and pink- to orange-red at its lower parts, and patterned in a fine darker orange or red reticulation. The mushrooms smell of hay when fresh or dried. It closely resembles '' R. legaliae'', though the latter species grows in

deciduous forest In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, aft ...

Habitat and distribution

''Rubroboletus rubrosanguineus'' is found in eastern Europe, east to the Caucasus. It is

mycorrhiza A mycorrhiza (from Greek μύκης ', "fungus", and ῥίζα ', "root"; pl. mycorrhizae, mycorrhiza or mycorrhizas) is a symbiotic association between a fungus and a plant. The term mycorrhiza refers to the role of the fungus in the plant ...

l, forming associations with spruce (''

Picea A spruce is a tree of the genus ''Picea'' (), a genus of about 35 species of coniferous evergreen trees in the family Pinaceae, found in the northern temperate and boreal (taiga) regions of the Earth. ''Picea'' is the sole genus in the subfami ...

'') and fir (''

Abies Firs (''Abies'') are a genus of 48–56 species of evergreen coniferous trees in the family Pinaceae. They are found on mountains throughout much of North and Central America, Europe, Asia, and North Africa. The genus is most closely related to ...

''), and generally found in montane habitats. The fungus is classified as " critically endangered" in a Redlist of fungi of the Czech Republic.

References

External links

* {{Taxonbar, from1=Q1827603, from2=Q97013102 Boletaceae Fungi described in 1983 Fungi of Europe rubrosanguineus