scented penstemon vs Penstemon palmeri

scented penstemon and Penstemon palmeri both are nouns.

Word	Noun	Adjective	Verb	Adverb
scented penstemon	Yes	No	No	No
Penstemon palmeri	Yes	No	No	No

As nouns, scented penstemon and Penstemon palmeri are synonyms defined as:

scented penstemon and Penstemon palmeri: fragrant puffed-up white to reddish-pink flowers in long narrow clusters on erect stems; Arizona to New Mexico and Utah

Other synonyms of scented penstemon include balloon flower.

scented penstemon (noun)	Penstemon palmeri (noun)
fragrant puffed-up white to reddish-pink flowers in long narrow clusters on erect stems; Arizona to New Mexico and Utah	fragrant puffed-up white to reddish-pink flowers in long narrow clusters on erect stems; Arizona to New Mexico and Utah