- Jamaica quassia - similar to the extract from Quassia amara
--1 is a kind of quassia
--1 is a substance ofJamaica quassia, bitterwood, Picrasma excelsa, Picrasma excelsum - Jamaica quassia, bitterwood, Picrasma excelsa, Picrasma excelsum - West Indian tree yielding the drug Jamaica quassia
--2 is a kind of bitterwood tree
--2 is a member of Picrasma, genus Picrasma
--2 has substances: Jamaica quassia - Jamaica quassia, bitterwood, Picrasma excelsa, Picrasma excelsum - West Indian tree yielding the drug Jamaica quassia