Styrax paralleloneurus

Styrax paralleloneurus (syn. Styrax sumatranus) is a species of Styrax native to Sumatra and Peninsular Malaysia.^[1] It is the main source of benzoin in Sumatra.^[2] Its balsamic resin is superior to that of Styrax benzoin, another source of benzoin Sumatra, as the latter dries slowly and remains sticky, hence more inpurities.^[3][4] It can have the largest galls of any known plant; up to 20 cm long,^[5][6] and about half as wide.

Styrax paralleloneurus
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Ericales
Family:	Styracaceae
Genus:	Styrax
Species:	S. paralleloneurus
Binomial name
Styrax paralleloneurus Perkins
Synonyms
Styrax paralleloneurus f. inutilis Steenis Styrax siamensis Rordorf Styrax sumatranus J.J.Sm.