"there was a piece of pussy-willow growing there"
Pussy willow
Creative Commons Attribution Share AlikePussy willow - Credit: Heineken, Wikimedia Commons
Pussy willow is the name given to the catkins of the willow and the sallow (trees of the genus Salix) when they are at an early stage of development.



Flowering catkin
Public DomainFlowering catkin - Credit: Ernie, Wikimedia Commons