Populus candicans and the Balm of Gilead

Abstract
Bud exudates of some poplars are compared using GC-MS. P. candicans resembles P. balsamifera. A sample of "Balm of Gilead" purchased in Oxford [U.K.] proved not to resemble its supposed source, P. candicans. Instead it was similar to P. nigra from which it was presumably collected in Europe.

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