is a species of flowering plant known by the common names western moss heather
and white mountain heather
. This heather is native to subalpine
areas of western North America, from Alaska to the mountains of California. It is a small, branching shrub which forms patches along the ground and in rocky crevices. The short, erect, snakelike stems are covered in tiny leathery scalelike leaves only a few millimeters long. From between the layers of scale leaves emerge reddish pedicels
each bearing a petite, hanging, down-facing, bell-shaped flower. The bractlets
are red and the contrasting flower is white.