genus Tamarix vs Tamarix

genus Tamarix and Tamarix both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Tamarix	Yes	No	No	No
Tamarix	Yes	No	No	No

As nouns, genus Tamarix and Tamarix are synonyms defined as:

genus Tamarix and Tamarix: genus of deciduous shrubs or small trees of eastern Mediterranean regions and tropical Asia

genus Tamarix (noun)	Tamarix (noun)
genus of deciduous shrubs or small trees of eastern Mediterranean regions and tropical Asia	genus of deciduous shrubs or small trees of eastern Mediterranean regions and tropical Asia