Catkin synonyms

The catkin falls off in a mass, separating from the branch by an articulation.

The male flowers are in small clusters on the usually slender and pendent stalk, forming an interrupted catkin; the stamens vary in number, usually six to twelve.

In the catkin shown in longitudinal section in fig.

The catkin falls off entire, separating from the branch by an articulation.

Female flowers arranged, two to three together on scale-like structures formed by the union of bracts, in catkins; ovary two-celled; fruit small, flattened, protected between the ripened scales of the catkin.