Penstemon parryi vs wild flower

Penstemon parryi and wild flower both are nouns.

Word	Noun	Adjective	Verb	Adverb
Penstemon parryi	Yes	No	No	No
wild flower	Yes	No	No	No

As nouns, wild flower is a hypernym of Penstemon parryi; that is, wild flower is a word with a broader meaning than Penstemon parryi:

Penstemon parryi: erect stems with pinkish-lavender flowers in long interrupted clusters; Arizona
wild flower: wild or uncultivated flowering plant

Other hypernyms of Penstemon parryi include wildflower.

Penstemon parryi (noun)	wild flower (noun)
erect stems with pinkish-lavender flowers in long interrupted clusters; Arizona	wild or uncultivated flowering plant