Boletellus ananas for the species is therefore "Boletus ananas" M.A. Curtis 1848, the basionym of "Boletellus ananas". "Boletellus ananas", as the type species of the genus "Boletellus", is in section "Boletellus" that Singer based on the scaly, dry cap with red-pink tones, a marginal veil that clasps the stem when immature, and longitudinally ridged spores that are greater than 16 μm long. The genus name "Boletellus" means "small boletus", while the specific epithet "ananas" alludes to the name for pineapple, referring to the pineapple-like pattern of scales on the cap surface. The mushroom is commonly known as the "pineapple bolete". The cap
Boletellus ananas ananas" by smooth stem without a ring, different spores, and flesh that is less tough. The Australian species "Boletellus ananiceps" has spores with narrow longitudinal ribs that do not have cross-striae. "B. dissiliens" has colors that are not red as in "B. ananas", and pores that can become reddish in maturity. Further, the cap flesh of "B. dissiliens" turns blue upon exposure to air. The fruit bodies of "B. ananas" typically grow scattered or in groups under oak and pine trees, often on their bases. In Guyana, the mushroom typically fruits singly or in pairs within above ground level on