Boletellus obscurecoccineus,[nb 1] known as the rhubarb bolete, is a species of fungus in the family Boletaceae, found in Australia, New Guinea, Java, Borneo, Japan, Korea, and Taiwan.

[1] Boletus puniceus, originally described from Kunming (Yunnan, China) in 1948,[4] and later transferred to Xerocomus in 1979[5] and Boletellus in 2002,[6] was already suspected by E.J.H.

[1] A brightly coloured and distinctive bolete, Boletellus obscurecoccineus has a rose-red or rhubarb-coloured, hemispherical to convex cap to a diameter of 7 cm (3 in), with an overhanging margin when young.

[11] The North American and European species Boletus rubellus has colouration that is somewhat similar to B. obscurecoccineus, but it lacks the scaly stem of the latter.

[10] The rhubarb bolete is an ectomycorrhizal species, found in the leaf litter of eucalyptus forests in Australia, and with oak and other deciduous trees in Asia.