| 1 | Native | Northern America | Eastern Canada | Canada | New Brunswick | | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. Note: = Asclepias incarnata var. pulchra Pers. |
| 1 | Native | Northern America | Eastern Canada | Canada | Nova Scotia | | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. Note: = Asclepias incarnata var. pulchra Pers. |
| 1 | Native | Northern America | Eastern Canada | Canada | Ontario | | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. Note: = Asclepias incarnata var. pulchra Pers. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Connecticut | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Maine | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Massachusetts | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | New Hampshire | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | New Jersey | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | New York | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Pennsylvania | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Rhode Island | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Vermont | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Delaware | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | District of Columbia | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Florida | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Georgia | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Maryland | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | North Carolina | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | South Carolina | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Tennessee | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Virginia | | Woodson, R. E., Jr. 1954. The North American species of Asclepias L. Ann. Missouri Bot. Gard. 41:1-211. |