Crocinoboletus N.K. Zeng, Zhu L. Yang & G. Wu, 2014

Zeng, Nian-Kai, Wu, Gang, Li, Yan-Chun, Liang, Zhi-Qun & Yang, Zhu L., 2014, Crocinoboletus, a new genus of Boletaceae (Boletales) with unusual boletocrocin polyene pigments, Phytotaxa 175 (3), pp. 133-140 : 134

Crocinoboletus N.K. Zeng, Zhu L. Yang & G. Wu , gen. nov.

MycoBank: MB 809228

Etymology: “ Crocino ” refers to the presence of the boletocrocins.

Basidiocarp stipitate-pileate with tubular hymenophore. Pileus 3.8–8 cm in diameter, convex to applanate, surface yellowish orange, bright orange to reddish orange, covered with minute, reddish brown squamules, turning bluish olivaceous quickly, then blackening when bruised. Hymenophore poroid, adnate or slightly depressed around apex of stipe; tubes 3–5 mm in depth, with pores 0.2–0.7 mm in diameter; orange, turning bluish olivaceous quickly, then blackening when bruised. Stipe 5–11 × 1–3 cm, centrally attached, subcylindric; surface concolorous with the pileus, covered with reddish orange squamules, turning bluish olivaceous quickly, then blackening when bruised. Context vivid golden yellow, turning bluish olivaceous quickly when bruised. Basidiospores subfusiform to ellipsoid, smooth. Pleuro- and cheilocystidia present. Pileipellis an interwoven trichoderm at the middle part of the pileus but a cutis at the margin of the pileus. Clamp connections absent. Polyene pigments boletocrocins present.

Type species: Boletus rufoaureus Massee , Bulletin of Miscellaneous Information of the Royal Botanic Gardens Kew 1909: 204, 1909