Picrasma excelsa vs Picrasma excelsum

Picrasma excelsa and Picrasma excelsum both are nouns.

Word	Noun	Adjective	Verb	Adverb
Picrasma excelsa	Yes	No	No	No
Picrasma excelsum	Yes	No	No	No

As nouns, Picrasma excelsa and Picrasma excelsum are synonyms defined as:

Picrasma excelsa and Picrasma excelsum: West Indian tree yielding the drug Jamaica quassia

Other synonyms of Picrasma excelsa include bitterwood, Jamaica quassia.

Picrasma excelsa (noun)	Picrasma excelsum (noun)
West Indian tree yielding the drug Jamaica quassia	West Indian tree yielding the drug Jamaica quassia