| Locality | Newfoundland, Placentia Bay, Cheese Is. |
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| Collection date | 13/05/1977 |
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| Collectors (aggregated) | Hooper, R.G., Reddin, D., Keats, D. |
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| Collecting no. | 183 |
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| Latitude | |
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| Longitude | |
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| Altitude | |
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| Habitat | Growing commonly on pebbles and shells, moderately exposed location. Water 6 degrees celsius, air 8 degrees celsius, salinity 29.8 degrees/oo |
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| State | Newfoundland and Labrador |
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| Country | |
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| Determined date | 13/05/1977 |
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| Type | |
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| Family | Rhodomelaceae |
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| Genus | Polysiphonia |
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| Species | flexicaulis |
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| Subspecies | |
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| Variety | |
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