Complex sentence: The spores are 7.5--9 by 6.5--7.5 µm, ellipsoid, ornamented with warts and short ridges that do not form a reticulum (a network of raised net-like ridges on the surface), with ridges up to 1.0 µm high.
Split into simpler sentences: The spores are 7.5--9 by 6.5--7.5 µm, with an ellipsoid shape. Their surfaces are ornamented with warts and short ridges that do not form a reticulum (a network of raised net-like ridges on the surface), with ridges up to 1.0 µm high.