Iris verna vs dwarf iris

Iris verna and dwarf iris both are nouns.

Word	Noun	Adjective	Verb	Adverb
Iris verna	Yes	No	No	No
dwarf iris	Yes	No	No	No

As nouns, Iris verna and dwarf iris are synonyms defined as:

Iris verna and dwarf iris: low-growing spring-flowering American iris with bright blue-lilac flowers

Other synonyms of Iris verna include vernal iris.

Iris verna (noun)	dwarf iris (noun)
low-growing spring-flowering American iris with bright blue-lilac flowers	low-growing spring-flowering American iris with bright blue-lilac flowers
	low-growing summer-flowering iris of northeastern United States