Mead's milkweed vs Asclepia meadii

Mead's milkweed and Asclepia meadii both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mead's milkweed	Yes	No	No	No
Asclepia meadii	Yes	No	No	No

As nouns, Mead's milkweed and Asclepia meadii are synonyms defined as:

Mead's milkweed and Asclepia meadii: milkweed of central North America; a threatened species

Other synonyms of Mead's milkweed include Asclepias meadii.

Mead's milkweed (noun)	Asclepia meadii (noun)
milkweed of central North America; a threatened species	milkweed of central North America; a threatened species