| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Fucus giganteus | Gaudichaud, 1826 | synonym | No | junior synonym |
original combination |
| Fucus pyrifer | Linnaeus, 1771 | synonym | No | junior synonym |
original combination |
| Laminaria pyrifera | (Linnaeus) Lamouroux, 1813 | synonym | No | junior synonym |
new combination |
| Macrocystis communis | Bory de Saint-Vincent, 1826 | synonym | No | junior synonym |
original combination |
| Macrocystis humboldtii | (Bonpland) C. Agardh, 1822 | synonym | No | junior synonym |
new combination |
| Macrocystis latifolius | Bory de Saint-Vincent, 1826 | synonym | No | junior synonym |
original combination |
| Macrocystis luxurians | (J.D. Hooker & Harvey) J. Agardh, 1848 | synonym | No | junior synonym |
new combination |
| Macrocystis orbigniana | Montagne, 1839 | synonym | No | junior synonym |
original combination |
| Macrocystis pelagica | Areschoug, 1848 | synonym | No | junior synonym |
original combination |
| Macrocystis planicaulis | C. Agardh, 1839 | synonym | No | junior synonym |
original combination |
| Macrocystis pyrifera | (Linnaeus) Agardh, 1820 | accepted name | Yes | senior synonym |
new combination |
| Macrocystis pyrifera var. humboldtii | Bonpland, 1808 | synonym | No | junior synonym |
original combination |
| Macrocystis pyrifera var. luxurians | J.D. Hooker & Harvey, 1847 | synonym | No | junior synonym |
original combination |
| Macrocystis tenuifolia | Postels & Ruprecht, 1840 | synonym | No | junior synonym |
original combination |