| Scientific Name | Author | English Name |
|---|---|---|
| Constantinea simplex | Setchell | Cup and saucer seaweed |
| Constantinea subulifera | Setchell, 1906 | Giant cup and saucer seaweed |
| Cryptosiphonia woodii | (J. Agardh) J. Agardh | Dark branching-tube seaweed |
| Dilsea californica | (J. Agardh) Kuntze | Leathery strap seaweed |
| Dudresnaya crassa | M.A. Howe | |
| Dudresnaya hawaiiensis | R.K.S.Lee | |
| Dumontia contorta | (S.G. Gmelin) Ruprecht | |
| Farlowia mollis | (Harvey & Bailey) Farlow & Setchell | Tattered strap seaweed |
| Gibsmithia hawaiiensis | Doty | |
| Neodilsea borealis | (I.A. Abbott) Lindstrom | |
| Pikea californica | Harvey |