Penstemon cinereus Piper ssp. foliatus D. D. Keck ssp. nov.

Oregon: Grant County: 3 mi W of Dixie Mtn. summit. Elev. 1280 m.
On serpentine bank. With Blepharipappus scaber Hook. Common hereabouts on serpentine hillsides. This individual forms a mat 6 dm across; corolla dark sky blue with blue-purple throat. Phenology: Flowering and Fruiting. Isotype: Penstemon cinereus Piper ssp. foliatus D. D. Keck. Published 1945. Amer. Midl. Nat. 33: 188. 1945.

D. D. Keck 3662, Jun 22, 1935
With J. Clausen
RM, Accession: 195037, Barcode: RM0004181