| Nominal Species (n = 5) | Present allocation (n = 5) | Ref. |
|---|---|---|
| Arbor cuspidata Schröder, Medioli & Scott, 1989 | Arbor cuspidata | 3477 |
| Edgertonia floccula Shires, Gooday & Jones, 1994 | Edgertonia floccula | 3477 |
| Arbor floccularis Schröder, Medioli & Scott, 1989 | Arbor floccularis | 3477 |
| Arbor hispida Schröder, Medioli & Scott, 1989 | Arbor hispida | 3477 |
| Arbor multiplex Schröder, Medioli & Scott, 1989 | Arbor multiplex | 3477 |