basidia_shape_tapering
tapering
sterigmata gradually tapering, up to 8 × 2-2.5 μm; involucres well-developed, often totally covering basidial cells (except sterigmata); basidia in older hymenium glued together in groups of 3-4
Basidiodendron widdringtoniae
Basidiodendron widdringtoniae