Ulmus sarniensis vs Ulmus campestris sarniensis

Ulmus sarniensis and Ulmus campestris sarniensis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ulmus sarniensis	Yes	No	No	No
Ulmus campestris sarniensis	Yes	No	No	No

As nouns, Ulmus sarniensis and Ulmus campestris sarniensis are synonyms defined as:

Ulmus sarniensis and Ulmus campestris sarniensis: a variety of the English elm with erect branches and broader leaves

Other synonyms of Ulmus sarniensis include guernsey elm, Jersey elm, Ulmus campestris wheatleyi, wheately elm.

Ulmus sarniensis (noun)	Ulmus campestris sarniensis (noun)
a variety of the English elm with erect branches and broader leaves	a variety of the English elm with erect branches and broader leaves