Alpinia officinarum vs Alpinia officinalis

Alpinia officinarum and Alpinia officinalis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Alpinia officinarum	Yes	No	No	No
Alpinia officinalis	Yes	No	No	No

As nouns, Alpinia officinarum and Alpinia officinalis are synonyms defined as:

Alpinia officinarum and Alpinia officinalis: Chinese perennial with pyramidal racemes of white flowers and pungent aromatic roots used medicinally and as flavoring

Other synonyms of Alpinia officinarum include lesser galangal.

Alpinia officinarum (noun)	Alpinia officinalis (noun)
Chinese perennial with pyramidal racemes of white flowers and pungent aromatic roots used medicinally and as flavoring	Chinese perennial with pyramidal racemes of white flowers and pungent aromatic roots used medicinally and as flavoring