Bolbitius demangei (Quél.) Sacc. & D. Sacc.

Diagnosis original:https://www.researchgate.net/figure/Bolbitius-demangei-A-Carpophores-growing-in-natural-habitat-B-Basidiospores-C_fig1_262000684

Bolbitius demangei (Quél.) Sacc. & D. Sacc. in Sylloge Fungorum 17: 74, 1905. Figs. 6–7

Basionym – Pluteolus demangei Quél. in Compt. Rend. Assoc. Franç. Avancem. Sci. 3: 495, 1902.

Carpophores 4.3–9.7 cm in height. Pileus 1.9–5.3 cm broad, 1.5–3.4 cm high, campanulate; umbonate, umbo short, reddish brown (9E4) to brown (6E7); surface viscid, delicate, brownish red (10C8) to reddish orange (7A6) towards the apex, yellowish white (4A2) towards margin, hygrophanous, fades to yellowish brown (5E8) on drying; pileal veil scaly, scales appressed fibrillose, more aggregated along the apex; margin regular, splitting at maturity, striated; cuticle not peeling; flesh thin, yellowish white, becoming brown when bruised, non–deliquescent; taste and odor none. Lamellae adnexed to free, unequal, crowded, narrow to moderately broad, 0.15–0.4 cm broad, smooth, fragile, yellowish brown (5E5) to reddish brown (8D7), becoming grayish yellow (2B7) on drying. Spore print reddish brown (8D7). Stipe central, 4.2–9.5 cm long, 0.4–0.9 cm broad, cylindrical, equal to slightly swollen at the base, fibrillose, hollow, surface reddish white (10A2), changing to reddish then brownish on handling, delicate; annulus absent.

Basidiospores 12–15.3 × 7.6–9.3 ?m (Q = 1.61), ellipsoidal, truncated with a germ pore, thick–walled, smooth, brownish yellow. Basidia 17–39 × 10–16 ?m, clavate, 2– and 4– spored, thin walled, with granulose contents in the upper part; sterigmata 2.5–3.4 ?m long. Gill edges sterile. Cheilocystidia abundant, 15.3–51 × 7.6–40 ?m, polymorphic, cylindrical, clavate, inflated clavate, lageniform to ventricose fusoid, sometimes with forking tips, thin–walled, granular, densely granular at the apices. Pleurocystidia absent. Pileus cuticle hymeniform, cellular elements 18.7–60 × 5–15.3 ?m, cylindrical to clavate, sometimes forking, parallel to each other, thin walled, granular, sometimes pseudoseptate; pileus trama homoiomerous, made up of interwoven, thin–walled, hyaline 3.4–20.4 ?m broad hyphae. Hymenophoral trama hyphae parallel, thin walled, narrow, 3.4–10 ?m broad. Stipe cuticle with abundant caulocystidia measuring 20.4–42.5 × 8.5–16 ?m, cylindrical to clavate, thin–walled, granular; stipe context composed of longitudinally parallel, cylindrical, thin–walled, hyaline 5–18.7 ?m broad hyphae. Clamp connections absent.