Pistillate flowers, two to eight, produced on a terminal peduncle, calyx four-parted, petals none, styles two to four, short, papillose.
"The Pecan and its Culture"
H. Harold Hume
He has shown that in certain papillose and bristle-like contrivances, plants possess such sense-organs; and moreover that these contrivances show a remarkable similarity to corresponding sense-organs in animals.
"Darwin and Modern Science"
A.C. Seward and Others