| Similarity | Rank | |
|---|---|---|
| koehler | 0.917 | 35559 |
| 1899a | 0.915 | 92689 |
| ophiacantha | 0.900 | 39626 |
| amphiura | 0.889 | 76242 |
| 1933a | 0.882 | 67240 |
| enopla | 0.877 | 62785 |
| verrill | 0.875 | 45082 |
| ljungman | 0.873 | 76174 |
| ophiomitrella | 0.859 | 73851 |
| ophiura | 0.854 | 74006 |
| sub-community | 0.852 | 36626 |
| ophiotrema | 0.851 | 80263 |
| ophioprium | 0.847 | 61525 |
| mortensen | 0.847 | 40486 |
| rubra | 0.846 | 44699 |
| var. | 0.845 | 74009 |
| stolonifera | 0.845 | 76974 |
| maritima | 0.841 | 32058 |
| ophiolimna | 0.840 | 84944 |
| agrostis | 0.837 | 52074 |
| ovina | 0.835 | 65054 |
| festuca | 0.832 | 41231 |
| saxatile | 0.832 | 86953 |
| abyssicola | 0.829 | 68658 |
| ophiolebes | 0.823 | 73857 |