cystidia_surface_ribbed
ridges
unevenly thick-walled; lumen up to 4 µm, narrow or wide; rooted at the base; gradually tapering; broadly rounded apex; large umbrella-shaped crystalline head up to 9 µm in diam with 10-12 deflexed and radiating ridges terminating in acute spines
Umbellus sinensis
Umbellus sinensis