Arundo richardii vs Cortaderia richardii

Arundo richardii and Cortaderia richardii both are nouns.

Word	Noun	Adjective	Verb	Adverb
Arundo richardii	Yes	No	No	No
Cortaderia richardii	Yes	No	No	No

As nouns, Arundo richardii and Cortaderia richardii are synonyms defined as:

Arundo richardii and Cortaderia richardii: tall grass of New Zealand grown for plumelike flower heads

Other synonyms of Arundo richardii include plumed tussock, toe toe, toetoe.

Arundo richardii (noun)	Cortaderia richardii (noun)
tall grass of New Zealand grown for plumelike flower heads	tall grass of New Zealand grown for plumelike flower heads