spore_surface_spiny
spines
an orderly alveolate reticulum, the alveolae 5-6-sided, 5-8 along spore length, the corners forming spines 5-7 x 0.5 µm broad, somewhat broader at the base, the alveolar walls uniformly as tall as the spines, spore microreticulum in some spores
Tuber oregonense
Tuber oregonense