Juncus triglumis

Juncus triglumis, called the three-flowered rush, is a species of flowering plant in the genus Juncus, native to the subarctic and subalpine Northern Hemisphere. It is typically found in calcareous tundra habitats and arcto-alpine fens. It is often found in association with Carex atrofusca and Carex bicolor in the so-called Caricion bicolori-atrofuscae alliance.

Subtaxa

The following subspecies are currently accepted:

Juncus triglumis subsp. albescens Hultén - Kamchatka and Chukotka in Far Eastern Russia, Alaska, all of Canada except the Yukon, the Rocky Mountains of the United States, and Greenland
Juncus triglumis subsp. triglumis - Greenland, Iceland, the Faroes, Great Britain, Europe, Asia, Japan, Sakhalin, the Kurils, Alaska, British Columbia, the Yukon and the Northwest Territories in Canada, and the Rocky Mountains of the United States