The Plant List — A working list for all plant species

⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-50079702, with some changes.

L Penstemon rydbergii subsp. aggregatus (Pennell) D.D. Keck is a synonym of Penstemon rydbergii var. aggregatus (Pennell) N.H. Holmgren

This name is a synonym of Penstemon rydbergii var. aggregatus (Pennell) N.H. Holmgren.

The record derives from Tropicos which reports it as a synonym (record 50079702) with original publication details: Amer. Midl. Naturalist 33(1): 158 158 1945.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:187751-2.