Boletus roseolateritius, known from Mississippi, has a cap that changes color according to its age: it is initially dark reddish to orangish, later reddish brown at maturity, fading to brownish orange or brownish pink with dull yellow tints, and finally turning dull dingy yellow in age.
Its pale yellow stipe lacks the reddish coloration and the hairs found on the base of B. subluridellus.
Microscopically, it has smaller spores, measuring 8.5–12 by 3.5–4.5 μm.
Boletus rufocinnamomeus is also similar in appearance, but can be distinguished by its yellow stipe that is dotted with orange-cinnamon to brownish dots.
Boletus flammans, another blue-bruising lookalike found in the southeastern United States, grows under conifers.
It has a reddish stipe with fine reticulations on its upper half.
Boletus roseolateritius, known from Mississippi, has a cap that changes color according to its age: it is initially dark reddish to orangish, later reddish brown at maturity, fading to brownish orange or brownish pink with dull yellow tints, and finally turning dull dingy yellow in age. Its pale yellow stipe lacks the reddish coloration and the hairs found on the base of B. subluridellus. Microscopically, it has smaller spores, measuring 8.5–12 by 3.5–4.5 μm. Boletus rufocinnamomeus is also similar in appearance, but can be distinguished by its yellow stipe that is dotted with orange-cinnamon to brownish dots. Boletus flammans, another blue-bruising lookalike found in the southeastern United States, grows under conifers. It has a reddish stipe with fine reticulations on its upper half.
Boletus subluridellus