Rheum rhaponticum vs Rheum cultorum

Rheum rhaponticum and Rheum cultorum both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rheum rhaponticum	Yes	No	No	No
Rheum cultorum	Yes	No	No	No

As nouns, Rheum rhaponticum and Rheum cultorum are synonyms defined as:

Rheum rhaponticum and Rheum cultorum: long cultivated hybrid of Rheum palmatum; stems often cooked in pies or as sauce or preserves

Other synonyms of Rheum rhaponticum include garden rhubarb, pie plant, Rheum rhabarbarum.

Rheum rhaponticum (noun)	Rheum cultorum (noun)
long cultivated hybrid of Rheum palmatum; stems often cooked in pies or as sauce or preserves	long cultivated hybrid of Rheum palmatum; stems often cooked in pies or as sauce or preserves