| 1 | Native | Northern America | North-Central U.S.A. | United States | Nebraska | w. | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | North Dakota | | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | South Dakota | w. | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Colorado | | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Idaho | | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Montana | | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Oregon | e. | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Washington | e. | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Wyoming | | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | South-Central U.S.A. | United States | New Mexico | | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | Arizona | | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | California | e. | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | Nevada | | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | Utah | | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | Western Canada | Canada | Alberta | s. | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | Western Canada | Canada | British Columbia | s. | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |
| 1 | Native | Northern America | Western Canada | Canada | Saskatchewan | s. | Gentry, J. L., Jr. & R. L. Carr. 1976. A revision of the genus Hackelia (Boraginaceae) in North America, north of Mexico. Mem. New York Bot. Gard. 26(1):215-223. |