| Fabaceae | |
Acacia koa var. hawaiiensis
| Rock | Terr. Haw. Div. For., Bot. Bull. 5: 23, 26, t. 6 | 1919 |
| Fabaceae | |
Acacia koa var. koa
| | | |
| Fabaceae | |
Acacia koa var. lanaiensis
| Rock | Bot. Bull. Board Agr. Forestry, Hawaii 5: 21 | 1919 |
| Fabaceae | |
Acacia koa var. latifolia
| (Benth.) H. St. John | Pacific Sci. 33(4): 363 | 1979 [1980] |
| Fabaceae | |
Acacia koa var. waianaeensis
| H. St. John | Pacific Sci. 33(4): 363 | 1979 [1980] |
| Fabaceae | |
Acacia koa var. weimeae
| Hochr. | Candollea 2: 377 | 1925 |