Leccinum aurantiacum, also known as Orange Oak Bolete, is a large or massive bolete that has a bun-shaped reddish-orange fleshy cap, whitish pores and a scaly stem, which turns pink and then black throughout where cut or bruised. It grows solitary or in small scattered groups on soil specifically under aspen.
bright orange skin, at first round like a ball, then ovate or bun-shaped. It is sticky when damp and has, just like Leccinum versipelle, a larger skin that hangs down or is tucked under the margin of the cap. Flesh creamy-white then vinaceous or sepia were cut. Thick and firm. Pores
white or cream, darkening vinaceous where bruised, circular. very small. Spores
are ochraceous-buff. Stem
dirty white, covered with woolly scales in an irregular network, at first white then rust, stoutish, more or less equal or swollen towards the base. The mushroom has no ring.
The most similar species is Leccinum versipelle, which differing from Leccinum aurantiacum grows under birch trees.
on the www.first-nature.com web site.