The blossom is normal as to the proper perianth, except that the labellum is unusually papillose, bearded almost to the base.    From Wordnik.com.  [Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants] Reference

Pistillate flowers, two to eight, produced on a terminal peduncle, calyx four-parted, petals none, styles two to four, short, papillose.    From Wordnik.com.  [The Pecan and its Culture] Reference