| 1 | Native | Northern America | North-Central U.S.A. | United States | Illinois | s. | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Missouri | s. | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Oklahoma | e. | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Connecticut | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Indiana | n. | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Massachusetts | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | New Jersey | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | New York | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Ohio | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Pennsylvania | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Rhode Island | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | West Virginia | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Alabama | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Arkansas | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Delaware | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Florida | n. | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Georgia | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Kentucky | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Louisiana | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Maryland | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Mississippi | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | North Carolina | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | South Carolina | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Tennessee | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Virginia | | Straley, G. B. 1977. Systematics of Oenothera sect. Kneiffia (Onagraceae). Ann. Missouri Bot. Gard. 64:397-403. |
| 2 | Cultivated | | | | | also cult. | |