''Penstemon serrulatus'' is a species of penstemon known by the common names Cascade penstemon, coast penstemon, or serrulate penstemon. It is native to the Pacific Northwest of North America, from Oregon to Alaska.
Similar species: Lamiales
By morpheme
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Uploaded Jun 24, 2019. Captured Jun 23, 2019 10:55 in Unnamed Road, Cle Elum, WA 98922, USA.
