‘Syringa’ is the Latin name for the lilac shrub 1.
The word is derived from the name of a Greek nymph, Syrinx, who was transformed into a hollow water reed 2. The lilac also has hollow stems, hence the name.
The hollow stem is also the derivation of the word ‘syringe’ 3
[...] many streets in the Salisbury area named after both trees (Sycamore Drive, Syringa Court, The Beeches) and parts of London (Westminster Road, West End Road, Highbury [...]