| Oleaceae | |
Fraxinus pennsylvanica fo. aucubifolia
| (H. Jaeger) Rehder | Bibl. Trees Shrubs 558 | 1949 |
| Oleaceae | |
Fraxinus pennsylvanica var. aucubifolia
| (H. Jaeger) Rehder | Cycl. Amer. Hort. 607 | 1900 |
| Oleaceae | |
Fraxinus pennsylvanica fo. austinii
| (Fernald) | | |
| Oleaceae | |
Fraxinus pennsylvanica var. austinii
| Fernald | Rhodora 40(479): 452–453, pl. 529, f. 1–2 | 1938 |
| Oleaceae | |
Fraxinus pennsylvanica var. austini-megaphylla
| Vict. & J. Rousseau | Contr. Inst. Bot. Univ. Montreal 36: 52 | 1940 |
| Oleaceae | |
Fraxinus pennsylvanica unranked campestris
| (Britton) F.C. Gates | Trans. Kansas Acad. Sci. 42: 137 | 1939 [1940] |
| Oleaceae | |
Fraxinus pennsylvanica var. campestris
| (Britton) F.C. Gates | Trans. Kansas Acad. Sci. 41: 102 | 1938 |
| Oleaceae | |
Fraxinus pennsylvanica fo. colorata
| B. Boivin | Naturaliste Canad. 93(4): 433 | 1966 |
| Oleaceae | |
Fraxinus pennsylvanica subsp. cubensis
| (Griseb.) A.E. Murray | Kalmia 13: 6 | 1983 |
| Oleaceae | |
Fraxinus pennsylvanica var. cubensis
| (Griseb.) A.E. Murray | Kalmia 13: 6 | 1983 |
| Oleaceae | |
Fraxinus pennsylvanica fo. erythrocarpa
| Vict. & J. Rousseau | Contr. Inst. Bot. Univ. Montreal 36: 51 | 1940 |
| Oleaceae | |
Fraxinus pennsylvanica var. integerrima
| Fernald | | |
| Oleaceae | |
Fraxinus pennsylvanica var. lanceolata
| (Borkh.) Sarg. | Silva 6: 50 | 1894 |
| Oleaceae | |
Fraxinus pennsylvanica fo. megaphylla
| Vict. & J. Rousseau | Contr. Inst. Bot. Univ. Montreal 36: 51 | 1940 |
| Oleaceae | |
Fraxinus pennsylvanica subsp. novae-angliae
| (Mill.) Buttler | Bot. Natursch. Hessen 18: 19 | 2005 |
| Oleaceae | |
Fraxinus pennsylvanica subsp. oregona
| (Nutt.) G.N. Mill. | Cornell Univ. Agric. Exp. Sta. Mem. 335: 41 | 1955 |
| Oleaceae | |
Fraxinus pennsylvanica var. ovata
| (Bosc) K. Koch | Dendrologie 2(1): 256 | 1872 |
| Oleaceae | |
Fraxinus pennsylvanica fo. pennsylvanica
| | | |
| Oleaceae | |
Fraxinus pennsylvanica var. pennsylvanica
| | | |
| Oleaceae | |
Fraxinus pennsylvanica subsp. profunda
| (Bush) A.E. Murray | Kalmia 13: 6 | 1983 |
| Oleaceae | |
Fraxinus pennsylvanica var. profunda
| (Bush) Sudw. | U.S.D.A. Div. Forest Bull. 14: 329 | 1897 |
| Oleaceae | |
Fraxinus pennsylvanica var. pubescens
| (Lam.) Lingelsh. | Pflanzenr. IV, 243(1): 41 | 1920 |
| Oleaceae | |
Fraxinus pennsylvanica fo. scotica
| B. Boivin | Naturaliste Canad. 93(4): 433 | 1966 |
| Oleaceae | |
Fraxinus pennsylvanica fo. subintegerrima
| | | |
| Oleaceae | |
Fraxinus pennsylvanica subsp. subintegerrima
| (Vahl) A.E. Murray | Kalmia 13: 6 | 1983 |
| Oleaceae | |
Fraxinus pennsylvanica var. subintegerrima
| (Vahl) Fernald | Rhodora 49(582): 159 | 1947 |
| Oleaceae | ** |
Fraxinus pennsylvanica var. typica
| Fernald | Rhodora 40(479): 453 | 1938 |
| Oleaceae | |
Fraxinus pennsylvanica subsp. velutina
| (Torr.) G.N. Mill. | Cornell Univ. Agric. Exp. Sta. Mem. 335: 40 | 1955 |
| Oleaceae | |
Fraxinus pennsylvanica var. viridis
| (F. Michx.) C.K. Schneid. | Ill. Handb. Laubholzk. 2: 826 | 1912 |