Ranunculus alismifolius, commonly known as Plantainleaf Buttercup, is a perennial herb that thrives in the moist mountain habitats of western North America, including British Columbia, California, and Colorado. It is particularly adapted to wet meadows, streambanks, and bogs, where it contributes to the biodiversity of montane and subalpine ecosystems. This species typically grows to a height of 10-60 cm and features basal leaves that are broadly oval to kidney-shaped. The plant produces showy yellow flowers from late spring to early summer, each with five to seven (rarely up to 12) glossy petals and numerous stamens, which are attractive to pollinators.

Plantainleaf Buttercup is valued for its bright, cheerful flowers and its ability to thrive in moist, sunny conditions, making it suitable for water gardens, bog gardens, and riparian plantings. It prefers consistently moist soils and full sun to partial shade. While it is not commonly used in traditional garden settings, it can be a unique addition to native plant gardens and restoration projects. Care should be taken as all parts of the plant are toxic when ingested, and it can cause skin irritation upon contact. It is not known for major diseases or pest issues, but good air circulation is recommended to prevent fungal problems.CC BY-SA 4.0