One of the mysteries of the English language finally explained.
Any of various white- or cream-flowered shrubs of the genus Philadelphus (family Hydrangeaceae); especially P. coronarius, native to southern Europe and south-west Asia and cultivated in numerous ornamental varieties and hybrids; also called mock orange.
Any of several South American trees of the genus Hevea (family Euphorbiaceae) which yield latex from which natural rubber is made; especially the para rubber tree, H. brasiliensis, of the Amazon basin. Also: this rubber itself. Frequently attributive, especially in "seringa rubber", "seringa tree".
Mid 18th century. From French seringa from post-classical Latin syringa<br>mid 19th century. Probably from Brazilian Portuguese seringa India rubber, apparently an extended use of Portuguese seringa, apparently so called because syringes were frequently made from natural rubber.
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