"Plum" is also a nickname for British humorist P. G. Wodehouse, cricketer Sir Pelham Warner and British-born fashion writer and novelist Victoria "Plum" Sykes.
A plum or gage is a stone fruit tree in the genus Prunus, subgenus Prunus. The subgenus is distinguished from other subgenera (peaches, cherries, bird cherries, etc) in the shoots having a terminal bud and the side buds solitary (not clustered), the flowers being grouped 1-5 together on short stems, and the fruit having a groove running down one side, and a smooth stone.
Species
The subgenus is divided into three sections:
Sect. Prunus (Old World plums). Leaves in bud rolled inwards; flowers 1-3 together; fruit smooth, often wax-bloomed.
P. cerasifera (cherry plum)
Prunus cocomilia
Prunus consociiflora"
P. domestica (species of most "plums" and "prunes" sold as such)
P. insititia
P. salicina (Japanese plum)
P. simonii
P. spinosa (blackthorn or sloe)
Sect. Prunocerasus ('New World plums). Leaves in bud folded inwards; fl