Betulaceae | |
Alnus rhombifolia var. bernardiana
| Munz & I.M. Johnst. | Bull. Torrey Bot. Club 52(5): 222–223 | 1925 |
Betulaceae | |
Alnus rhombifolia var. ovalis
| H. Winkl. | Pflanzenr. IV(61): 115 | 1904 |
Betulaceae | |
Alnus rhombifolia var. typica
| Callier | Repert. Spec. Nov. Regni Veg. 10: 229 | 1912 [1911] |