The cap and stalk
5 - 15 cm
Scientific name: Rubroboletus dupainii (Boud.) Kuan Zhao & Zhu L. Yang 2014
Synonyms: Species Fungorum 10.07.2015:
Boletus dupainii Boud. 1902
Tubiporus dupainii (Boud.) Maire. 1937
Habit of Growth: Mycorrhiza
Protection: Mushroom is protected
Trees: Castanea (Chestnut) , Fagus (Beech) , Quercus (Oak)
Cap: 6-12 cm across, young hemispherical, later convex to flattened, smooth, in moist slimy slippery, in dry shiny, purple red, partially with yellow stains, margin is smooth, margin of the mouths is sometimes outstanding.
Hymenophore: mouths are young orange red, later carmine red, against margin yellowish, under pressure weakly bluish, tubes are yellow to olive colored, on stem weakly notched to decurrent.
Spore print: olivebrown
Spore: elliptic, 8,8-17,1 x 3,4-7,8 μm
Stem: 5-10 x 3-6 cm, clavate or bulbous, on yellow ground reddish colored, fine scaled, against base intensive reddish, full, in stem is flesh yellowish, against base reddish, bluish.
Flesh: whitish to pale yellowish, if cut immediately bluish, thick, odor is pleasant, sometimes like musk, taste is mild, pleasant.
Habitat: solitary to gregarious in broadleaved forests, under chestnut, oak and beech, on mild places, grows from summer to fall