There are two subspecies of Common Willow-herb at the Park. They differ in leaf shape, petal length, and whether there are turions (a small bud, capable of growing into a plant)present. Both are plants of moist habitat. This is subspecies glandulosum in which the pink petals are as much as a half-inch in length.
Location: Longmire Meadow, Mount Rainier National Park
Date: August 2, 2014
The stems of subspecies glandulosum are branched, and the leaves are ovate.
Location: Stevens Canyon, Mount Rainier National Park
Date: July 1, 2016
A white-flowered form of subspecies glandulosum.
Location: Longmire near the Nisqually River, Mount Rainier National Park
Date: July 12, 2014
This is subspecies ciliatum. The petals are shorter, and turions are absent. The plants may reach three feet in height, and the leaves are elliptical.
Location: Sunshine Point, Mount Rainier National Park
Date: July 8, 2014