| Lemna minor L. | A. Nelson 6424 | United States of America. Wyoming. Yellowstone National Park. Snake River. | | 3699994 |  |
| Lemna minor L. | A. Nelson 8494 | United States of America. Wyoming. Sheridan Co. Sheridan. Ponds. | | 3699995 |  |
| Lemna minor L. | | | | 3699996 |  |
| Lemna minor L. | | | | 3699997 |  |
| Lemna minor L. | | | | 3699998 |  |
| Lemna minor L. | | | | 3700001 |  |
| Lemna minor L. | C. L. Hitchcock 23841 | United States of America. Idaho. Custer Co. 15 miles n. of Challis, roadside ditch, about 2 ft. deep. | | 3700002 |  |
| Lemna minor L. | | | | 3700003 |  |
| Lemna minor L. | | | | 3700005 |  |
| Lemna minor L. | | | | 3700006 |  |
| Lemna minor L. | L. M. Underwood 265 | United States of America. Colorado. Ouray Co. along Uncompahgre River, near Ouray. | | 3700007 |  |
| Lemna minor L. | L. M. Underwood 322 | United States of America. Colorado. Ironton Park, 9 mi S of Ouray. | | 3700008 |  |
| Lemna minor L. | S. M. Tracy s.n. | United States of America. Colorado. Las Animas Co. Trinidad. | | 3700009 |  |
| Lemna minor L. | | | | 3700011 |  |
| Lemna minor L. | | | | 3700022 |  |
| Lemna minor L. | | | | 3700024 |  |
| Lemna minor L. | | | | 3700027 |  |
| Lemna minor L. | | | | 3700028 |  |
| Lemna minor L. | | | | 3700029 |  |
| Lemna minor L. | E. Palmer s.n. | United States of America. Oklahoma. Indian Territory, chiefly on the False Washita, between Fort Cobb and Fort Arbuckle. | | 3700031 |  |
| Lemna minor L. | A. A. Beetle 72 | United States of America. Colorado. Douglas Co. Freshwater bog, Castle Rock. | | 3700032 |  |
| Lemna minor L. | | | | 3700034 |  |
| Lemna minor L. | | | | 3700035 |  |
| Lemna minor L. | E. J. Palmer 11803 | United States of America. Texas. San Saba Co. San Saba. | | 03700036 |  |
| Lemna minor L. | H. J. Banker 2921 | United States of America. New York. Schaghticoke. Stover's bend, Tomhannock Creek. | | 3700037 |  |
| Lemna minor L. | | | | 3700038 |  |
| Lemna minor L. | C. L. Porter 6570 | United States of America. South Dakota. Custer Co. Pond 8 miles east of Custer, in the Black Hills. | | 3700039 |  |
| Lemna minor L. | | | | 3700040 |  |
| Lemna minor L. | | | | 3700041 |  |
| Lemna minor L. | | | | 3700042 |  |
| Lemna minor L. | | | | 3700044 |  |
| Lemna minor L. | | | | 3700045 |  |
| Lemna minor L. | | | | 3700046 |  |
| Lemna minor L. | | | | 3700047 |  |
| Lemna minor L. | G. W. Stevens 315 | United States of America. Oklahoma. Harper Co. creek near Doby Springs. | | 3700050 |  |
| Lemna minor L. | | | | 3700052 |  |
| Lemna minor L. | | | | 3700053 |  |
| Lemna minor L. | | | | 3700054 |  |
| Lemna minor L. | | | | 3700057 |  |
| Lemna minor L. | | | | 3700058 |  |
