marshy tundra Marshy tracts (see MARSH) that are found as important components in the low-, middle-, and high-Arctic tundra belts, because drainage is frequently poor as a result of the widespread presence of permanently frozen ground at no great depth. Grasses, sedges, and dwarf willows are the most prolific vascular plants of marshy tundra, often accompanied by luxuriant growths of moss.

marshy tundra Marshy tracts (see marsh) that are found as important components in the low-, middle-, and high-arctic tundra belts, because drainage is frequently poor as a result of the widespread presence of permanently frozen ground at no great depth. Grasses, sedges, and dwarf willows are the most prolific vascular plants of marshy tundra, often accompanied by luxuriant growths of moss.