Hydrophyllum tenuipes (Pacific waterleaf) is an herbaceous perennial plant native to western North America from British Columbia to northern California. The Hydrophyllum tenuipes plant spreads by rhizomes to form large colonies in wooded areas. Flowers are greenish-white to lavender, appearing in mid to late spring. Five conspicuous stamen extend beyond the five petals to a length more than twice as long as the petals. Sepals bristly on margins. There are numerous clusters of flowers on stalks extending from upper leaf axils.
