Presence of distal pistillate involucellar bractlets: 0, present; 1, absent.
Size of distal pistillate involucellar bractlets: 0, small, stipuliform; 1, large, enveloping.
Arrangement of staminate bractlets: 0, symmetrically distributed; 1, clustered into "gland."
Margins of staminate bractlets: 0, entire; 1, laciniate.