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Plantaginaceae
Penstemon
Penstemon davidsonii
Penstemon davidsonii
Davidson's penstemon
Greene 1892 -
Pittonia 2:241. 1892
Specifications
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Synonyms
Penstemon menziesii subsp. davidsonii
(Greene) Piper
Penstemon menziesii f. davidsonii
(Greene) G.N.Jones