Brunneocorticium pyriforme

Brunneocorticium pyriforme Sheng H. Wu 2007, in Wu et al., Mycologia, 99(2), 302-309 (2007).

Etymology. From pyriformis (5pear-shaped), referring to the shape of the basidiospores.

Diagnosis: Basidiocarp resupinate and effuse, 120–220 µm thick, initially appearing as small brown dots composed of abundant skeletal hyphae. Later a white fertile region developes at center of dot. White fertile zone broadening during growth of basidiocarp, eventually leaving a narrow brown sterile zone at the margin. Hymenial surface of mature basidiocarp white or whitish, smooth, cracked; margin brown, abrupt.Hyphal system dimitic; generative hyphae nodoseseptate. Subiculum brown, due to presence of abundant yellowish-brown skeletal hyphae, generally not dense in texture. Subicular generative hyphae

colorless, rare and usually difficult to detect, 1.5–3 µm diam, thin-walled; subicular skeletal hyphae abun abundant, yellowish-brown or brown, occasionally branched, 1.5–4.5 µm diam, generally thick-walled and rarely thin-walled. Hymenium thickening, differentiated from the subiculum, that is of dense texture, usually with numerous amorphous, colorless, excreted material; hyphae mainly vertical, colorless, usually glued together and indistinct, thin-walled. Leptocystidia not abundant, difficult to detect in some collections, cylindrical, occasionally flexuous, colorless, often bearing secondary septa, 35–80 × 4–9 µm, thin- or slightly thick-walled. Basidia subclavate with a median constriction, 45–55 ×7–8 µm, 2- sterigmate. Basidiospores pyriform, bearing a minute apiculus, smooth, thin-walled, usually guttulate, colorless,10–13 × 5.5–7 µm, IKI–, CB–.

Index Fungorum Number: IF505728