Penstemon deustus vs wildflower

Penstemon deustus and wildflower both are nouns.

Word	Noun	Adjective	Verb	Adverb
Penstemon deustus	Yes	No	No	No
wildflower	Yes	No	No	No

As nouns, wildflower is a hypernym of Penstemon deustus; that is, wildflower is a word with a broader meaning than Penstemon deustus:

Penstemon deustus: stems in clumps with cream-colored flowers; found from Washington to Wyoming and southward to California and Utah
wildflower: wild or uncultivated flowering plant

Other hypernyms of Penstemon deustus include wild flower.

Penstemon deustus (noun)	wildflower (noun)
stems in clumps with cream-colored flowers; found from Washington to Wyoming and southward to California and Utah	wild or uncultivated flowering plant