Catkin

Elongated flower-cluster, with se ile flowers sub IMG:content-0769.png:[blocks in formation] 1, Shoot of Birch in spring, bearing large terminal Male (6) and Female (a) Catkins. 2, Shoot of Birch in autumn with ripe Female Catkin. 3, Female Catkin of Willow. tended by scaly bracts, as in Willows and Oaks; also called Ament.