About Lysimachia latifolia (Hook.) Cholewa
Lysimachia latifolia (Hook.) Cholewa is a low-growing, creeping perennial that reaches 5 to 30 cm (2.0 to 11.8 in) in height. It has tuberous, creeping rhizome roots, with erect stems that grow 10–20 cm (4–8 in) tall. It produces 5 to 7 whorled, lanceolate leaves with smooth entire margins, arranged evenly in a single whorl. Its white or pink flowers bloom in April or May. The calyx, the collective term for sepals, has 5 to 9 segments, is persistent, and the corolla, the collective term for petals, also has 5 to 9 segments. The corolla is rotate with a very short tube and elliptic-lanceolate segments. Stamens match the number of corolla lobes, between 5 and 9, and are positioned opposite the corolla lobes. This species produces 1 to 3 one-flowered, thread-like peduncles that lack bracts. The ovary is single-celled, and the style, part of the gynoecium, is thread-like. This plant grows on moist, shaded slopes in deep, light soil that is rich in organic matter, particularly leaf mould. In Canada, it is found in British Columbia, Alberta, and Yukon. In the United States of America, it occurs across Washington, Idaho, Oregon, and northern California.