''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 May 31, 2015. Captured May 30, 2015 16:22 in Iron Goat Trail, Leavenworth, WA 98826, USA.
