| juncus castaneus subsp. leucochlamys | | Canada: Nunavut, Nunavut Mainland, Rankin Inlet, 13 km NW of Rankin Inlet along Meliadine esker at 55 K/16 396758 at NE end Sik-sik' Lake, Meliadine River Park study area, Hudson Bay' | | 459993670 |
| juncus castaneus subsp. leucochlamys | | Canada: Nunavut, Victoria Island, Murray Point, Murray Point, W side of Wilbank Bay | | 459993683 |
| juncus castaneus subsp. leucochlamys | | Canada: Nunavut, Ellesmere Island, Slidre Fiord Quad, Fosheim Penin, Hot Weather Cr., base camp and vicinity, 'Picnic Lake' | | 459993677 |
| juncus castaneus subsp. leucochlamys | | Canada: Nunavut | | 459993675 |
| juncus castaneus subsp. leucochlamys | | Canada: Nunavut, Baffin Island, Kimmirut, Hameau | | 459993673 |