| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Penstemon procerus Graham | W. Hess 9070 with E. Evert, K. Allen, N. Stoynoff, K. Cherwin, & K. Dreisilker, 17 Jul 2000 | United States of America. Wyoming. Park Co. Clay Butte Fire Lookout, off U.S. 212, 15 miles west of Cooke. | 638883 |  | |
| Penstemon procerus Graham | R. Foster 11553 24 Jun 1999 | United States of America. Montana. Beaverhead Co. Big Hole National Battlefield. | 638884 |  | |
| Penstemon procerus Douglas ex Graham var. procerus | W. N. Suksdorf 264 02 Aug 1921 | United States of America. Montana. Gallatin Co. Wallrock Basin, about 12 miles northwest of Wilsall. | 570087 |  | |
| Penstemon procerus Douglas ex Graham var. procerus | W. Moses s.n. 20 Jul 1894 | United States of America. Big Horn Mountains. | 772327 |  | |
| Penstemon procerus Graham var. procerus | R. W. Scott 991 08 Aug 1966 | United States of America. Wyoming. Fremont Co. Vicinity of Snow Lake, 5 miles north of the confluence of Wiggins Fork and Frontier Creek. | 639843 |  | |
| Penstemon procerus Graham var. procerus | C. L. Porter 5460 12 Jul 1950 | United States of America. Wyoming. Park Co. 5 miles west of Beartooth Lake, northern Park County. | 639825 |  | |
| Penstemon procerus Graham var. procerus | T. G. Call 414 with V. C. Call, 01 Jul 1950 | United States of America. Wyoming. Lincoln Co. Deadman Creek (Grey's River drainage), 1.5 miles from mouth. | 639834 |  | |
| Penstemon procerus Graham var. procerus | R. C. Rollins 1331 08 Jul 1936 | United States of America. Colorado. Saguache Co. In Saguache Park, upper Saguache Creek. | 640025 |  | |
| Penstemon procerus Graham var. procerus | Johnston 438 with Hedgecock, 31 Jul 1917 | United States of America. Wyoming. Fox Park. | 639833 |  | |
| Penstemon procerus Graham var. procerus | W. Huestis s.n. 10 Jul 1914 | United States of America. Colorado. Park Co. Como. | 640012 |  | |
| Penstemon procerus Graham var. procerus | E. J. Neese 11824 28 Jun 1982 | United States of America. Utah. Summit Co. Summit of Parleys Canyon, drainage ditch near Jeremy's Ranch housing development. | 640046 |  | |
| Penstemon procerus Graham var. procerus | C. C. Curtis s.n. 01 Aug 1900-08 Aug 1900 | United States of America. Wyoming. Upper Hoback Basin. | 639840 |  | |
| Penstemon procerus Graham var. procerus | C. S. Sheldon 89 6128 22 Jul 1884 | United States of America. Colorado. North Park. Near Pinkhampton's. | 640032 |  | |
| Penstemon procerus Graham var. procerus | A. Nelson 7107 10 Jun 1900 | United States of America. Wyoming. Sweetwater Co. Bush Ranch. | 639809 |  | |
| Penstemon procerus Graham var. procerus | F. Tweedy s.n. Aug 1897 | United States of America. Wyoming. Teton Co. Mt. Leidy. | 639812 |  | |
| Penstemon procerus Graham var. procerus | F. Tweedy 50 Jul 1898 | United States of America. Wyoming. Headwaters of Tongue River, Big Horn Mountains. | 639813 |  | |
| Penstemon procerus Graham var. procerus | F. Tweedy 2329 28 Jun 1899 | United States of America. Wyoming. Sheridan Co. Big Horn. | 639814 |  | |
| Penstemon procerus Graham var. procerus | F. Tweedy 3415 20 Jul 1900-15 Aug 1900 | United States of America. Wyoming. Eastern slope of the Big Horn Mountains. Headwaters of Clear Creek and Crazy Woman River. | 639816 |  | |
| Penstemon procerus Graham var. procerus | J. H. Barnhart 475 11 Jul 1890 | United States of America. Colorado. Leadville. | 640008 |  | |
| Penstemon procerus Graham var. procerus | F. E. Clements 43 1896 | United States of America. Colorado. Mt. Harvard. | 640015 |  |