Scrophulariaceae (Magnoliophyta)
Penstemon hallii var. arizonicus A.Gray
Syn. Fl. N. Amer. 21: 263. 1886
Specimen 1: Isotype -- J. T. Rothrock 426
Specimen 2: Isotype -- J. T. Rothrock 426
View all records of Penstemon hallii var. arizonicus A.Gray