Semen nudum ad apicem fructûs.
* Male flowers.
Catkin cylindrical.
Empalement 4-divided. Blossom none.
* Female flowers.
Catkin globular, covered all over by flowers.
Empalement beneath and remaining, 3-sometimes 4-toothed. Blossom none. Shaft thread-shaped. Fruit cylindrically club-shaped, and two-lipped at the point.
Seed naked at the point of the fruit.
Broussonetia papyrifera. Vent. Tab. Veg. et Willd. Sp. Pl.
SPECIFIC CHARACTER.