Penstemon fruticosus var. douglasii (Hook.) C.K.Schneid. Ill. Handb. Laubholzk. 2: 615 (1911)

Nomenclatural References

• literature : Ill. Handb. Laubholzk. [C.K.Schneider] 2: 615. 1911 BHL link from IPNI metadata.
• person : Camillo Karl Schneider (1876-1951) Based on occurrence of standard abbreviation 'C.K.Schneid.' in the authors string.
• person : William Jackson Hooker (1785-1865) Based on occurrence of standard abbreviation 'Hook.' in the authors string.
• database : IPNI record: 187408-2