| Kalmia angustifolia L. | | a | | Kalmia angustifoliaL. | |
| Kalmia cuneata Michx. | | a | | Kalmia cuneataMichx. | |
| Kalmia glauca Aiton | Kalmia polifolia Wangenh. | | | Kalmia glaucaAiton | Kalmia polifoliaWangenh. |
| Kalmia intermedia Lange | Kalmia angustifolia L. | | | Kalmia intermediaLange | Kalmia angustifoliaL. |
| Kalmia latifolia L. | | a | | Kalmia latifoliaL. | |
| Kalmia latifolia L. f. myrtifolia (Bosse) K. Koch | Kalmia latifolia L. | | i | Kalmia latifoliaL. f. myrtifolia (Bosse) K. Koch | Kalmia latifoliaL. |
| Kalmia polifolia Wangenh. | | a | | Kalmia polifoliaWangenh. | |
| Kalmia polifolia Wangenh. var. microphylla (Hook.) Rehder | Kalmia microphylla (Hook.) A. Heller var. microphylla | | i | Kalmia polifoliaWangenh. var.microphylla (Hook.) Rehder | Kalmia microphylla(Hook.) A. Heller var.microphylla |
| Kalmia carolina Small | Kalmia angustifolia L. var. carolina (Small) Fernald | | | Kalmia carolinaSmall | Kalmia angustifoliaL. var.carolina (Small) Fernald |
| Kalmia latifolia L. var. myrtifolia Bosse | Kalmia latifolia L. | | i | Kalmia latifoliaL. var.myrtifolia Bosse | Kalmia latifoliaL. |
| Kalmia microphylla (Hook.) A. Heller | | a | | Kalmia microphylla(Hook.) A. Heller | |
| Kalmia glauca Aiton var. microphylla Hook. | Kalmia microphylla (Hook.) A. Heller var. microphylla | | i | Kalmia glaucaAiton var.microphylla Hook. | Kalmia microphylla(Hook.) A. Heller var.microphylla |
| Kalmia microphylla (Hook.) A. Heller var. microphylla | | a | i | Kalmia microphylla(Hook.) A. Heller var.microphylla | |
| Kalmia microphylla (Hook.) A. Heller var. occidentalis (Small) Ebinger | | a | i | Kalmia microphylla(Hook.) A. Heller var.occidentalis (Small) Ebinger | |
| Kalmia occidentalis Small | Kalmia microphylla (Hook.) A. Heller var. occidentalis (Small) Ebinger | | | Kalmia occidentalisSmall | Kalmia microphylla(Hook.) A. Heller var.occidentalis (Small) Ebinger |
| Kalmia microphylla (Hook.) A. Heller subsp. occidentalis (Small) Roy L. Taylor & MacBryde | Kalmia microphylla (Hook.) A. Heller var. occidentalis (Small) Ebinger | | i | Kalmia microphylla(Hook.) A. Heller subsp. occidentalis (Small) Roy L. Taylor & MacBryde | Kalmia microphylla(Hook.) A. Heller var.occidentalis (Small) Ebinger |
| Kalmia angustifolia L. var. angustifolia | | a | i | Kalmia angustifoliaL. var.angustifolia | |
| Kalmia angustifolia L. var. carolina (Small) Fernald | | a | i | Kalmia angustifoliaL. var.carolina (Small) Fernald | |
| Kalmia buxifolia (P. J. Bergius) Gift & Kron | | a | | Kalmia buxifolia(P. J. Bergius) Gift & Kron | |
| Kalmia procumbens (L.) Gift et al. ex Galasso et al. | | a | | Kalmia procumbens(L.) Gift et al. ex Galasso et al. | |