Lewisia cotyledon vs Lewisia

Lewisia cotyledon and Lewisia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lewisia cotyledon	Yes	No	No	No
Lewisia	Yes	No	No	No

Lewisia cotyledon (noun)	Lewisia (noun)
evergreen perennial having a dense basal rosette of long spatula-shaped leaves and panicles of pink or white-and-red-striped or pink-purple flowers; found on cliffs and in rock crevices in mountains of southwestern Oregon and northern California	genus of western North American low-growing herbs having linear woolly leaves and large pink flowers