spore_surface_spiny
spines
an orderly alveolate reticulum the alveolae 5-6-sided 5-7 along spore length the corners forming spines 2.5-4 x 0.5 µm broad somewhat broader at the base the alveolar walls as tall as the spines microreticulum in some spores when the microscope objective focused on the optical cross section but not on the spore wall surface or on SEM micrographs of the surface spore wall wall 2.0-2.5 µm
Tuber castellanoi
Tuber castellanoi