Irregular spines underneath. Growing under conifers. Odor not distinct. Spores globose, with spines up to 1 um long, 5.5 - 7.5 um in diameter.
Can’t really tell from pics, but these are HUGE. 45cm (18”) across at minimum.
On decaying Veratrum californicum.
All parts inamyloid. Spores measure (16) 18.5 – 19.15 (19.2) × (7) 7.7 – 9 µm
Q = (2.1) 2.12 – 2.4 (2.5) ; N = 6
Me = 18.4 × 8.2 µm ; Qe = 2.3
15.99 7.02
18.96 7.68
18.49 8.98
19.17 8.24
19.15 9.03
18.79 7.99