Table 1. Collection details of egg masses from which algae were sampled.
| Location | Code | Coordinates (dec. degrees) | Date | Sample type | Host | GenBank Acc. | |
| Nova Scotia | lon | lat | |||||
| St. Andrews | StA1 | −61.750 | 45.499 | 01-04-11 | ES* | A. maculatum | KJ711228, KJ711229, KJ711248 |
| St. Andrews | StA2 | −61.750 | 45.499 | 05-05-12 | ES | A. maculatum | KJ711230, KJ711231, KJ711232 |
| East Bay | EB | −60.362 | 46.013 | 25-04-11 | ES | A. maculatum | KJ711198, KJ711238 |
| Graywood (Hwy 8) | GW | −65.426 | 44.622 | 14-05-11 | ES | A. maculatum | KJ711202 |
| Wolfville | WV | −64.297 | 45.001 | 13-05-11 | ES | A. maculatum | KJ711236, KJ711237 |
| Hwy#7 | H7 | −62.055 | 45.318 | 21-04-12 | ES | A. maculatum | KJ711242, KJ711205, KJ711206 |
| Fairmont | FM | −61.922 | 45.684 | 26-04-12 | ES | A. maculatum | KJ711199, KJ711200, KJ711201 |
| Snakepit 2 | SP2 | −63.639 | 44.872 | 28-04-12 | ES | A. maculatum | KJ711226, KJ711227, KJ711246, KJ711247 |
| Trafalgar | TF | −62.566 | 45.121 | 29-04-12 | ES | A. maculatum | KJ711233, KJ711234, KJ711235 |
| Queensville | QV | −61.366 | 45.734 | 29-04-12 | ES | A. maculatum | KJ711215, KJ711216, KJ711217, KJ711218, KJ711219 |
| Rocky Mountain | RM | −62.253 | 45.394 | 02-05-12 | ES | A. maculatum | KJ711220, KJ711221, KJ711222 |
| Mira River | MR | −60.015 | 46.017 | 05-05-12 | ES | A. maculatum | KJ711207, KJ711208, KJ711209 |
| Oxford | O | −63.886 | 45.707 | 11-05-12 | ES | A. maculatum | KJ711210, KJ711211, KJ711243 |
| Point Michaud | PM | −60.668 | 45.593 | 22-05-12 | ES | A. maculatum | KJ711212, KJ711213, KJ711214 |
| Cape George | CG | −61.941 | 45.836 | 28-05-12 | ES | A. maculatum | KJ711196, KJ711197 |
| Halifax | Hb_cul | −63.654 | 44.617 | 2011 | CI** | A. maculatum | KJ711137 |
| Halifax | H | −63.666 | 44.691 | 2009 | ES | A. maculatum | KJ711203, KJ711204, KJ711239, KJ711240, KJ711241 |
| Beaver Bank | BB_cul | −63.680 | 44.818 | 2011 | CI | A. maculatum | KJ711131, KJ711132, KJ711134, KJ711135, KJ711136, KJ711138 |
| Halifax | R | −63.654 | 44.617 | 2011 | ES | L. sylvatica | KJ711139, KJ711140, KJ711141, KJ711142, KJ711143, KJ711144, KJ711145, KJ711146, KJ711147 |
| British Columbia | |||||||
| Bamfield | BF | −125.016 | 48.871 | 05-05-11 | ES | A. gracile | KJ711133, KJ711162, KJ711163, KJ711164, KJ711165, KJ711166, KJ711167, KJ711168, KJ711169, KJ711170, KJ711171, KJ711172, KJ711173 |
| Wood Lake | WL | −125.581 | 48.991 | 24-03-12 | ES | L. aurora | KJ711223 |
| Swan Lake | SL | −125.595 | 49.001 | 21-03-12 | ES | L. aurora | KJ711224, KJ711225, KJ711244, KJ711245 |
| New Jersey, USA | |||||||
| Greenbrook Sanctuary | GSa | −73.924 | 40.914 | 17-03-12 | ES | A. maculatum | KJ711181, KJ711182, KJ711183, KJ711184, KJ711186, KJ711187, KJ711188, KJ711189, KJ711190, KJ711193 |
| Greenbrook Sanctuary | GSb | −73.924 | 40.914 | 25-03-12 | ES | A. maculatum | KJ711174, KJ711175, KJ711176, KJ711177, KJ711194 |
| Greenbrook Sanctuary | GSc | −73.924 | 40.914 | 14-04-12 | ES | A. maculatum | KJ711178, KJ711179, KJ711180, KJ711185 |
| Greenbrook Sanctuary | GSa_cul | −73.924 | 40.914 | 17-03-12 | CI | A. maculatum | KJ711195 |
| Greenbrook Sanctuary | GSb_cul | −73.924 | 40.914 | 25-03-12 | CI | A. maculatum | KJ711191, KJ711192 |
| Tennessee, USA | |||||||
| Sewanee | TN | −85.910 | 35.204 | 02-18-13 | ES | A. maculatum | KJ711249, KJ711250, KJ711251, KJ711252, KJ711253, KJ711254, KJ711255, KJ711256 |
| California, USA | |||||||
| Arcata | CA | −124.082 | 40.867 | 03-07-12 | ES | A. gracile | KJ711148, KJ711149, KJ711150, KJ711151, KJ711152, KJ711153, KJ711154, KJ711155, KJ711156, KJ711157, KJ711158, KJ711159, KJ711160, KJ711161 |
| Culture collections | |||||||
| C. gloeophila | SAG 12-4 | −86.568 | 39.143 | 1953 | CI | A. maculatum | KJ711128 |
| C. gloeophila | SAG 12-5 | −76.475 | 42.447 | 1953 | CI | A. maculatum | KJ711129 |
| C. gloeophila | CCAP 11/127 | −2.935 | 54.381 | 1992 | CI | Free-living | KJ711130 |
*ES = environmental sequence; **CI = cultured isolate.
Name codes correspond to branch names in Figure 2.