• W. L. Stern 666, United States of America
• W. L. Stern 667, United States of America
• J. C. Lendemer 12635, United States of America
• J. C. Lendemer 12946, United States of America
• D. E. Atha 6140, United States of America
• D. E. Atha 5647, United States of America
• D. E. Atha 5695, United States of America
• D. E. Atha 6613, United States of America
• D. E. Atha 6657, United States of America
• D. E. Atha 7078, United States of America
• D. E. Atha 7143, United States of America
• D. E. Atha 7078, United States of America
• D. E. Atha 7152, United States of America
• D. E. Atha 7345, United States of America
• N. H. Holmgren 15480, United States of America
• D. E. Atha 8418, United States of America
• N. H. Holmgren 16053, United States of America
• D. E. Atha 10443, United States of America
• D. E. Atha 10477, United States of America
• D. E. Atha 10518, United States of America
• D. E. Atha 10533, United States of America
• D. E. Atha 10532, United States of America
• N. Taylor 2091, United States of America
• D. E. Atha 14146, United States of America
• C. L. Gilly 269, United States of America
• E. T. Moldenke 11455, United States of America
• H. N. Moldenke 1489, United States of America
• H. N. Moldenke 1489, United States of America
• K. K. Mackenzie 2727, United States of America
• A. Niederer s.n., United States of America
• K. K. Mackenzie 5885, United States of America
• K. K. Mackenzie 7130, United States of America
• K. K. Mackenzie 1614, United States of America
• K. K. Mackenzie 6303, United States of America
• H. M. Denslow s.n., United States of America
• N. L. Britton s.n., United States of America
• K. K. Mackenzie 1086, United States of America
• K. K. Mackenzie 704, United States of America
• K. K. Mackenzie 704, United States of America
• K. K. Mackenzie, United States of America
• R. F. C. Naczi 13842, United States of America
• B. Meurer-Grimes 27, United States of America
• W. C. Ferguson s.n., United States of America
• Collector unknown s.n., United States of America
• G. H. Shull 181, United States of America
• G. H. Shull 180, United States of America
• W. C. Ferguson 5076, United States of America
• W. C. Ferguson 1820, United States of America
• W. C. Ferguson 6444, United States of America
• W. C. Ferguson 7722, United States of America
• W. C. Ferguson 5675, United States of America
• W. C. Ferguson 1697, United States of America
• W. C. Ferguson s.n., United States of America
• W. C. Ferguson s.n., United States of America
• J. A. Bisky s.n., United States of America
• J. K. Underwood 487, United States of America
• W. H. Blanchard 10, United States of America
• W. B. Fox 41, United States of America
• E. L. Core s.n., United States of America
• Collector unspecified 76, United States of America
• W. H. Duncan 8691, United States of America
• H. N. Moldenke 2401, United States of America
• N. L. Britton s.n., United States of America
• Collector unspecified s.n., United States of America
• Collector unknown 12, United States of America
• Collector unknown 374, United States of America
• J. I. Northrop s.n., United States of America
• N. H. Holmgren 9789, United States of America
• H. M. Raup 7403, United States of America
• H. M. Raup 7754, United States of America
• W. M. Canby s.n., United States of America
• J. K. Small s.n., United States of America
• J. H. Lehr 1044, United States of America
• J. I. Northrop s.n., United States of America
• J. H. Barnhart 1253, United States of America
• J. H. Barnhart 1253, United States of America
• Collector unspecified s.n., United States of America
• Collector unknown 7
• N. L. Britton s.n., United States of America
• N. L. Britton s.n., United States of America
• A. E. Radford 11850, United States of America
• T. F. Lucy 1392, United States of America
• W. D. Day s.n., United States of America
• L. Walton 35136, United States of America
• R. West s.n., United States of America
• W. M. Benner s.n., United States of America
• W. C. Ferguson s.n., United States of America
• S. C. Osborne s.n., United States of America
• W. M. Benner s.n., United States of America
• A. A. Heller s.n., United States of America
• Collector unspecified s.n., United States of America
• Collector unspecified s.n., United States of America
• L. R. Gibbes s.n., United States of America
• R. Kral 41240, United States of America
• G. F. Buddell, Magnoliophyta; North America
• Collector unknown s.n., United States of America
• G. W. Hawes s.n., United States of America
• C. Stone 456, United States of America
• A. Bond s.n., United States of America
• Collector unknown s.n., United States of America
• Collector unspecified 2011, United States of America
• H. D. House 27085, United States of America
• T. H. Kearney 114, United States of America
• W. M. Canby s.n., United States of America
• A. J. Grout s.n., United States of America
• Collector unknown, United States of America
• Collector unknown s.n., United States of America
• Collector unknown s.n.
• Collector unknown s.n.
• Collector unknown 2610, United States of America
• A. A. Heller 806, United States of America
• C. C. Curtis s.n.
• H. D. House s.n., United States of America
• R. F. C. Naczi 13850, United States of America
• W. R. Adams 8442, United States of America
• D. A. Kribs 8172, United States of America
• A. J. Sharp 3922, United States of America
• L. M. Stewart s.n., United States of America
• E. W. Wood 4792, United States of America
• R. R. Wilson 139, United States of America
• J. F. Reed s.n., United States of America
• M. McKee 1667, United States of America
• H. E. Ahles 87567, United States of America
• N. L. Britton s.n., United States of America
• Collector unknown s.n.
• Collector unknown s.n.
• G. H. T. Jamieson s.n.
• G. H. T. Jamieson s.n., United States of America
• G. H. Shull 432, United States of America
• E. S. Steele 150, United States of America
• J. M. Fogg Jr. 17575, United States of America
• J. M. Fogg Jr. 16680, United States of America
• E. A. Bartholomew 2517, United States of America
• A. A. Heller 672, United States of America
• Collector unknown s.n.
• Collector unknown s.n.
• J. K. Small s.n., United States of America
• Collector unknown s.n., United States of America
• J. M. Coulter 2588, United States of America
• J. D. Dwyer 2356, United States of America
• A. A. Heller 806, United States of America
• A. A. Heller 1086, United States of America
• F. I. X. Rugel s.n., United States of America
• A. A. Tyler s.n., United States of America
• E.-J. Gilbert s.n., United States of America
• C. F. Batchelder s.n., United States of America
• A. Floden 758, United States of America
• B. E. Wofford 96-43, United States of America
• N. L. Britton s.n., United States of America
• W. C. Brumbach 8546, United States of America
• Collector unknown 350
• G. E. Howard 3556, United States of America
• K. M. Wiegand s.n., United States of America
• L. A. Wheeler s.n., United States of America
• Collector unknown s.n., United States of America
• D. E. Boufford 21232, United States of America
• R. Kral 40794, United States of America
• Collector unspecified 37-6, United States of America
• H. N. Moldenke 6507, United States of America
• R. M. Harper 336, United States of America
• T. H. Kearney 889, United States of America
• Collector unknown 1618, United States of America
• W. W. Eggleston 344, United States of America
• W. H. Blanchard 10
• D. E. Atha 15029, United States of America
• M. Fastuca $, United States of America
• D. E. Atha 15382, United States of America
• Betula lenta L.
• J. Fowler s.n., Canada
• N. L. Britton s.n., United States of America
• W. H. Leggett s.n., United States of America
• C. C. Curtis, United States of America
• S. A. Mori 28082, United States of America
• S. A. Mori 27731A, United States of America
• S. A. Mori 27802, United States of America
• S. A. Mori 28214, United States of America
• S. A. Mori 28134, United States of America
• S. A. Mori 28145, United States of America
• S. A. Mori 28140, United States of America
• S. A. Mori 28011, United States of America
• F. C. Seymour 278, United States of America
• F. R. Fosberg 55553, United States of America
• F. R. Fosberg 45643, United States of America
• S. A. Mori 27797, United States of America
• J. Fowler s.n., Canada
• V. Bustamante 602, United States of America
• V. Bustamante 970, United States of America
• D. H. R. McClelland 319, United States of America
• M. H. Nee 43859, United States of America
• M. H. Nee 54284, United States of America
• M. H. Nee 54326, United States of America
• M. H. Nee 54547, United States of America
• S. L. Clarke s.n., United States of America
• T. Morong s.n., United States of America
• T. Morong s.n., United States of America
• Betula lenta L.
• Betula lenta L.
• N. Taylor 1236, United States of America
• T. G. Yuncker 5468, United States of America
• T. G. Yuncker 16532, United States of America
• N. Taylor 307, United States of America
• J. G. Jack 3960, United States of America
• W. H. Welch 6963, United States of America
• W. H. Welch 1058, United States of America
• G. V. Nash 472, United States of America
• G. V. Nash 1, United States of America
• G. V. Nash s.n., United States of America
• G. V. Nash 2, United States of America
• E. G. K s.n., United States of America
• A. W. Cahilly 22, United States of America
• E. Roy 35, United States of America
• E. Roy 35, United States of America
• W. D. Longbottom 19140, United States of America
• K. M. Wiegand s.n., United States of America
• E. H. Walker 7682, United States of America
• R. B. Hough s.n., United States of America
• H. H. Rusby s.n., United States of America
• Collector unspecified s.n., United States of America
• Collector unspecified s.n., United States of America
• Collector unknown s.n., United States of America
• Collector unknown s.n., United States of America
• T. J. Hale s.n., United States of America
• Collector unspecified 816, United States of America
• W. R. Buck 45100, United States of America
• P. Butter 901, United States of America
• M. C. Pace 99, United States of America
• M. C. Pace 102, United States of America
• M. C. Pace 112, United States of America
• M. C. Pace 426, United States of America
• M. C. Pace 238, United States of America
• M. C. Pace 113, United States of America
• M. C. Pace 109, United States of America
• Betula lenta L.
• S. R. Hill 23080, United States of America
• S. R. Hill 192720, United States of America
• P. Wilson 10844, United States of America

• D. E. Atha 10443, United States of America
• D. E. Atha 10477, United States of America
• D. E. Atha 10518, United States of America
• D. E. Atha 10532, United States of America
• D. E. Atha 10533, United States of America
• D. E. Atha 6140, United States of America
• D. E. Atha 6613, United States of America
• D. E. Atha 6657, United States of America
• D. E. Atha 7078, United States of America
• D. E. Atha 7345, United States of America
• D. E. Atha 7143, United States of America
• D. E. Atha 7152, United States of America
• D. E. Atha 5695, United States of America
• D. E. Atha 8418, United States of America
• D. E. Atha 15029, United States of America
• D. E. Atha 14146, United States of America
• D. E. Atha 15382, United States of America
• D. E. Atha 5647, United States of America

• Betula lenta L.