• D. E. Atha 6443, United States of America
• D. E. Atha 6455, United States of America
• N. Taylor 2422, United States of America
• N. Taylor 2704, United States of America
• N. Taylor 2296, United States of America
• s.n.
• Kalmia angustifolia L. var. angustifolia, New Jersey
• C. O. Grassl 2425, Canada
• J. M. Macoun s.n., Canada
• A. A. Heller 1124, United States of America
• A. A. Heller 1124, United States of America
• W. H. Seaman s.n.
• J. L. C. Marie-Victorin 18344, Canada
• C. D. Howe 312, Canada
• Collector unspecified s.n., United States of America
• C. D. Howe 21, Canada
• D. S. Erskine 1308, Canada
• W. G. Dore s.n., Canada
• H. N. Moldenke 3285, United States of America
• H. M. Raup 7210, United States of America
• C. F. Wheeler s.n., United States of America
• L. H. Lighthipe s.n., United States of America
• Collector unspecified s.n., United States of America
• Kalmia angustifolia L. var. angustifolia
• W. J. Beal s.n., United States of America
• E. G. Hartmann 180, United States of America
• K. A. Wagner 1023, United States of America
• T. W. Edmondson 4252, United States of America
• C. F. Batchelder s.n., United States of America
• Collector unspecified s.n., United States of America
• K. K. Mackenzie 2661, United States of America
• K. K. Mackenzie 717, United States of America
• F. H. Blodgett s.n., United States of America
• F. Tweedy s.n., United States of America
• J. Kezer s.n., United States of America
• H. B. Meredith s.n., United States of America
• W. H. Witte s.n., United States of America
• P. A. Hyypio 2219, United States of America
• G. W. Bassett s.n., United States of America
• P. Wilson s.n., United States of America
• E. T. Moldenke 18334, United States of America
• D. C. Eaton s.n., United States of America
• E. H. Eames s.n., United States of America
• C. O. Grassl 2446, Canada
• E. S. Anderson 260 51 D, Canada
• E. T. Moldenke 11924, United States of America
• M. L. Fernald 12146, United States of America
• M. L. Fernald 6665, United States of America
• T. W. Edmondson 6065, Canada
• P. V. Krotkov 9295, Canada
• L. R. Moyer s.n., Canada
• Kalmia angustifolia L. var. angustifolia
• H. P. Sartwell s.n., United States of America
• H. N. Moldenke 5083, United States of America
• T. W. Edmondson 2804, United States of America
• C. C. Stewart 2376, United States of America
• F. C. MacKeever MV 96, United States of America
• E. C. Marquand s.n., United States of America
• M. L. Fernald 10366, United States of America
• H. M. Denslow s.n., United States of America
• H. M. Denslow s.n., United States of America
• J. H. Lehr 77, United States of America
• H. M. Raup 7734, United States of America
• P. A. McCabe s.n., United States of America
• Collector unspecified s.n., United States of America
• S. A. Cain 1780, United States of America
• H. N. Moldenke 10572, United States of America
• P. Wilson s.n., United States of America
• E. A. Mearns 125, United States of America
• Collector unknown s.n., United States of America
• H. N. Moldenke 3285, United States of America
• C. C. Stewart 1981, United States of America
• A. Niederer s.n., United States of America
• H. Groh s.n., Canada
• Collector unknown s.n., United States of America
• A. L. Hobbs s.n., United States of America
• C. H. Peck s.n.
• P. Wilson s.n., United States of America
• S. A. Cain 265-1, United States of America
• Collector unspecified 444, United States of America
• C. C. Curtis s.n., United States of America
• Collector unspecified 232, United States of America
• E. M. Kittredge s.n., United States of America
• Collector unknown 288, United States of America
• N. L. Britton s.n., United States of America
• C. C. Curtis s.n., United States of America
• E. A. Mearns s.n., United States of America
• M. L. Delafield s.n., United States of America
• N. L. Britton s.n., United States of America
• W. M. Canby s.n., United States of America
• A. A. Tyler s.n., United States of America
• Collector unspecified 1711, United States of America
• F. W. Starmer s.n., United States of America
• L. Arsène 344, Saint-Pierre et Miquelon
• S. L. Glowenke 6528, United States of America
• J. M. Fogg Jr. 14256, United States of America
• Fabius 239, Canada
• W. A. Setchell s.n., United States of America
• S. A. Cain 120, United States of America
• J. A. Bisky s.n., United States of America
• Collector unspecified s.n., United States of America
• E. S. Burgess s.n., United States of America
• W. H. Minshall s.n., Canada
• Collector unspecified s.n.
• J. Fowler s.n., Canada
• H. A. Senn 1553, Canada
• E. C. Yuncker 5458, Canada
• P. A. Rydberg 7810, United States of America
• J. Rousseau 35480, Canada
• Doggett s.n., United States of America
• M. H. Nee 25634, United States of America
• F. J. Hermann 11546, United States of America
• N. Taylor 1919, United States of America
• N. Taylor 1813, United States of America
• C. B. Robinson 564, Canada
• C. B. Robinson 350B, Canada
• N. Taylor 2126, United States of America
• S. R. Hill 18587, United States of America
• G. V. Nash s.n., United States of America
• B. L. Robinson 41, Canada
• D. B. O. Savile 2561, Canada
• C. D. Howe 815, Canada
• K. K. Mackenzie s.n., Canada
• C. D. Howe 922, Canada
• C. C. Stewart 5181, Canada
• B. W. Brooks s.n., Canada
• W. H. Minshall 236, Canada
• B. Boivin 1210, Canada
• M. L. Fernald 7898, Canada
• J. I. Northrop 211, Canada
• E. H. Day s.n., United States of America
• Collector unknown s.n.
• Collector unspecified s.n., United States of America
• A. W. Wood s.n., United States of America
• Collector unspecified s.n., United States of America
• H. A. Gleason 7, Canada

• D. E. Atha 6443, United States of America
• D. E. Atha 6455, United States of America

• Kalmia angustifolia L. var. angustifolia