a.
Veil made up of chains of smooth, thin-walled, filamentous to elongate, sometimes ellipsoid or a few almost globose elements with distinct end cells; subsect. Lanatuli J. Lange
b.
Veil made up of branched, diverculate, thin- or thickwalled hyphae; if elements in chains with distinct end cells then the walls are thickened and yellow-brown; subsect. Alachuani Sing.