| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Penstemon fasciculatus A.Gray | E. Palmer 264 Aug 1885-Nov 1885 | Mexico. Chihuahua. South-western Chihuahua. | isotype | 130570 |  |
| Penstemon fasciculatus A.Gray | D. E. Breedlove 63123 with B. Anderson, 24 Aug 1986 | Mexico. Between Navios and El Soldado near Mimbres along Mexican Highway 40 between Mazatlan and Durango. | 773053 |  | |
| Penstemon fasciculatus A.Gray | D. E. Breedlove 61254 30 Aug 1984 | Mexico. Chihuahua. 29 km south of Creel on road to Guachochic. | 773054 |  | |
| Penstemon fasciculatus A.Gray | P. Wilson 3590d with M. C. Castellanos, M. Johnson, and V. Pureza, 24 Jul 1999 | Mexico. Chihuahua. Sierra Madre Occidental, Road 23 south of Creel. | 773052 |  | |
| Penstemon fasciculatus A.Gray | V. N. Siplivinsky 4031 with Hans Beck, Robert Bye, Tilton Davis IV, 27 Jun 1982 | Mexico. Chihuahua. Sierra Madre Occidental. Road from Creel to La Bufa; km 35, 9 miles north from pass between Humira and Basiguare. | 773055 |  | |
| Penstemon fasciculatus A.Gray | R. W. Spellenberg 12635 with L. Brouillet, T. K. Todsen, 15 Aug 1998 | Mexico. Sonora. Yécora Mun. 2 km west of Maicoba. | 677149 |  |