Penstemon davidsonii Greene. Engl.: Davidson's penstemon. Sven.: topp-penstemon.
Flowering plants. A view straight up a cliff. Mt. Hood Nat'l Forest, OR, US. Wild. 1998-06-01.
Flowering stand. Mt. Hood Nat'l Forest, OR, US. Wild. 1998-06-01.
Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.