a.
Elements of veil smooth or with crystals that easily dissolve in HCl; spores without episporium; subsect. Nivei Citerin emend.Uljé & Noordel.
b.
Elements of veil with persistent, nipple-shaped warts that do not dissolve in HCl; spores usually with distinct, rarely indistinct or lacking episporium; subsect. Narcotici Uljé & Noordel.