Penstemon laetus subsp. roezlii (Regel) D.D.Keck Univ. Calif. Publ. Bot. 16: 390 (1932)

Nomenclatural References

• literature : Univ. Calif. Publ. Bot. 16: 390 (fig. 10). 1932 BHL link from IPNI metadata.
• person : David D. Keck (1903-1995) Based on occurrence of standard abbreviation 'D.D.Keck' in the authors string.
• person : Eduard August von Regel (1815-1892) Based on occurrence of standard abbreviation 'Regel' in the authors string.
• database : IPNI record: 187577-2