Penstemon rydbergii var. varians (A.Nelson) Cronquist Vasc. Pl. Pacif. N.W. 4: 402 (1959)

Nomenclatural References

• person : Arthur Cronquist (1919-1992) Based on occurrence of standard abbreviation 'Cronquist' in the authors string.
• person : Aven Nelson (1859-1952) Based on occurrence of standard abbreviation 'A.Nelson' in the authors string.
• database : IPNI record: 187753-2
• database : The Plant List v1.1 record tro-29201477
• database : The Plant List version 1.0, record: tro-29201477