Castilleia vs Castilleja

Castilleia and Castilleja both are nouns.

Word	Noun	Adjective	Verb	Adverb
Castilleia	Yes	No	No	No
Castilleja	Yes	No	No	No

As nouns, Castilleia and Castilleja are synonyms defined as:

Castilleia and Castilleja: genus of western North and South American perennials often partially parasitic on roots of grasses

Other synonyms of Castilleia include genus Castilleia, genus Castilleja.

Castilleia (noun)	Castilleja (noun)
genus of western North and South American perennials often partially parasitic on roots of grasses	genus of western North and South American perennials often partially parasitic on roots of grasses