Yukon white birch vs Betula neoalaskana

Yukon white birch and Betula neoalaskana both are nouns.

Word	Noun	Adjective	Verb	Adverb
Yukon white birch	Yes	No	No	No
Betula neoalaskana	Yes	No	No	No

As nouns, Yukon white birch and Betula neoalaskana are synonyms defined as:

Yukon white birch and Betula neoalaskana: Alaskan birch with white to pale brown bark

Yukon white birch (noun)	Betula neoalaskana (noun)
Alaskan birch with white to pale brown bark	Alaskan birch with white to pale brown bark