| Name | Author | Source | Citation | Year |
|---|---|---|---|---|
| Aegira virescens | (Carmichael ex Berkeley) Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 11 | 1924 |
| Chlanidophora abyssicola | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 11 | 1924 |
| Chordaria disessa | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 8 | 1924 |
| Chordaria gracilis | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 8 | 1924 |
| Coilodesme corrugata | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 8 | 1924 |
| Coilodesme polygnampta | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 9 | 1924 |
| Coilodesme rigida | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 9 | 1924 |
| Coilodesme sitchensis | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 9 | 1924 |
| Desmarestia farcta | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13(1): 7 | 1924 |
| Desmarestia media var. tenuis | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13(1): 7 | 1924 |
| Desmarestia munda | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 7 | 1924 |
| Desmarestia pacifica | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13(1): 6 | 1924 |
| Dictyosiphon tenuis | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 10 | 1924 |
| Ectocarpus parksii | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 1 | 1924 |
| Leathesia amplissima | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 3 | 1924 |
| Leathesia nana | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13{1}: 3 | 1924 |
| Microspongium saundersii | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 12 | 1924 |
| Petrospongium rugosum | (Okamura) Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 12 | 1924 |
| Phaeostrophion irregulare | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 10 | 1924 |
| Punctaria hesperia | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 3 | 1924 |
| Punctaria occidentalis | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 4 | 1924 |
| Ralfsia californica | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 2 | 1924 |
| Ralfsia fungiformis | (Gunnerus) Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 11 | 1924 |
| Ralfsia hesperia | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 2 | 1924 |
| Zonaria farlowii | Setchell & N.L. Gardner | Univ. Calif. Publ. Bot. | 13: 11 | 1924 |