• K. H. Dueholm 10629, United States of America
• E. J. Neese 9464, United States of America
• D. D. Keck 809, United States of America
• G. Nisbet 860, United States of America
• G. Nisbet 863, United States of America
• D. D. Keck 913, United States of America
• W. L. Fry 49848, United States of America
• D. L. Hazlett 9900, United States of America
• J. W. Powell 388, United States of America
• R. E. Brooks 3750, United States of America
• L. O. Overholts s.n., United States of America
• J. Murdoch 4671, United States of America
• A. I. Mulford s.n., United States of America
• R. C. Rollins 1359, United States of America
• E. C. Yuncker 12020, United States of America
• B. H. Smith 97, United States of America
• C. F. Baker 658, United States of America
• F. Petrak 50006, United States of America
• C. F. Baker s.n., United States of America
• N. H. Holmgren 5892, United States of America
• J. F. Kemp s.n., United States of America
• J. Wolfe 293, United States of America
• Collector unspecified s.n., United States of America
• A. Nelson 7473, United States of America
• A. Nelson 7800, United States of America
• E. E. Nelson 80, United States of America
• E. E. Nelson 611, United States of America
• C. S. Crandall 1795, United States of America
• F. Tweedy 5721, United States of America
• C. L. Shear 5161, United States of America
• C. L. Shear 3329, United States of America
• L. M. Underwood 420, United States of America
• P. C. Lesica 6079, United States of America
• P. C. Lesica 7527, United States of America
• D. H. Mansfield 90245, United States of America
• N. H. Holmgren 5394, United States of America
• N. H. Holmgren 5408, United States of America
• J. E. Patton 1133, United States of America
• C. H. Kauffman 88, United States of America
• C. H. Kauffman 223, United States of America
• J. Mauzy 73, United States of America
• A. Nelson 11077, United States of America
• R. C. Rollins 1052, United States of America
• A. Nelson 3214, photo of type; North America
• C. L. Hitchcock 4098, United States of America
• J. Flock 1175, United States of America
• F. W. Pennell 6288, United States of America
• F. W. Pennell 6293, United States of America
• F. W. Pennell 6301, United States of America
• F. W. Pennell 6371, United States of America
• F. W. Pennell 6377, United States of America
• P. Train s.n., United States of America
• D. V. Clark 144G, United States of America
• F. Tweedy 4302, United States of America
• C. L. Shear 4016, United States of America
• Collector unspecified 1796, United States of America
• W. C. Sturgis s.n., United States of America
• A. Eastwood s.n., United States of America
• E. Bethel 4272, United States of America
• F. W. Pennell 15363, United States of America
• F. W. Pennell 15380, United States of America
• D. D. Keck 3622, United States of America
• S. C. Head 241, United States of America
• F. W. Pennell 20735, United States of America
• F. W. Pennell 20791, United States of America
• E. P. Sheldon 8390, United States of America
• M. Shipley s.n., United States of America
• W. H. Baker 6071, United States of America
• A. H. Holmgren 7967, United States of America
• J. H. Christ 11113, United States of America
• J. H. Christ 11150, United States of America
• N. H. Holmgren 5733, United States of America
• W. H. Baker 6071, United States of America
• A. Cronquist 6569, United States of America
• F. E. Clements 253, United States of America
• J. Mauzy s.n., United States of America
• M. J. Williams 80 20719, United States of America
• C. G. Brown CGB74726, United States of America
• R. K. Gierisch 642, United States of America
• N. H. Holmgren 5949, United States of America
• T. L. Jensen 621, United States of America
• T. L. Jensen 621, United States of America
• D. V. Clark 476, United States of America
• D. V. Clark 489, United States of America
• D. V. Clark 492, United States of America
• D. V. Clark 496, United States of America
• M. E. Lewis 3431, United States of America
• D. V. Clark 143, United States of America
• D. V. Clark 143, United States of America
• D. V. Clark 477, United States of America
• D. V. Clark 478, United States of America
• D. V. Clark 479, United States of America
• D. V. Clark 485, United States of America
• D. V. Clark 486, United States of America
• D. D. Keck 884, United States of America
• F. W. Pennell 22443, United States of America
• J. H. Christ 10563, United States of America
• W. H. Baker 9554, United States of America
• J. H. Christ 18833, United States of America
• J. H. Christ 18913, United States of America
• J. H. Christ 18947, United States of America
• J. Cory 1708, United States of America
• N. H. Holmgren 11326, United States of America
• N. H. Holmgren 13974, United States of America
• D. V. Clark 597, United States of America
• D. V. Clark 598, United States of America
• D. V. Clark 599, United States of America
• D. V. Clark 601, United States of America
• D. V. Clark 608, United States of America
• L. M. Shultz 3487, United States of America
• J. L. Reveal 6322, United States of America
• N. H. Holmgren 14902, United States of America
• N. H. Holmgren 14973, United States of America
• R. E. Brainerd 475, United States of America
• D. D. Keck 913, United States of America
• J. C. Frémont 101
• R. R. Halse 7954, United States of America
• C. C. Freeman 24679, United States of America
• P. L. Packard 72 42, United States of America
• P. L. Packard 80 110, United States of America
• N. D. Atwood 8927, United States of America
• N. D. Atwood 14015, United States of America
• N. D. Atwood 1914, United States of America
• C. L. Porter 6541, United States of America
• W. H. Baker 10311, United States of America
• D. D. Keck 834, United States of America
• E. Whitehouse 19004, United States of America
• Collector unspecified 675, United States of America
• B. Maguire 16964a, United States of America
• B. Maguire 26667, United States of America
• F. E. Lutz s.n., United States of America
• D. B. Dunn 14607, United States of America
• A. Nelson 7311, United States of America
• J. W. Grimes 1651, United States of America
• J. W. Grimes 1653, United States of America
• Penstemon rydbergii A.Nelson var. rydbergii
• L. N. Goodding 1606, United States of America
• L. N. Goodding 1567, United States of America
• A. Nelson 8725, United States of America
• J. H. Christ 5472, United States of America
• R. K. Gierisch 1308, United States of America
• T. Hogan 3880, United States of America
• T. Hogan 3875, United States of America
• S. L. Welsh 1368, United States of America
• A. A. Heller 10135, United States of America
• C. C. Parry s.n., United States of America
• C. C. Parry s.n., United States of America
• C. C. Parry 263, United States of America
• C. C. Parry s.n., United States of America
• W. W. Eggleston 19284, United States of America
• J. F. Macbride 974, photo of type; North America

• Penstemon rydbergii A.Nelson var. rydbergii