Vernal Pool Buttercup is a member of the buttercup family. The small flowers have tiny yellow petals. The head of seeds is much larger than the flower was and resembles an unripe berry.
Two other buttercups are found at Mather Field. One has large, maple-shaped leaves, yellow flowers and seeds that are covered in hooked spines. The other is white-flowered with fern-like leaves and grows in the water.
Fun Facts:
Vernal Pool Buttercup shades other plants, with its floating leaves.
Life Cycle:
Vernal Pool Buttercup is an annual plant, so it dies off every year. It germinates in wet areas, soon after the rains begin in the fall. It has two forms, one suitable for wet vernal pools and one for dried vernal pools. Its early leaves have long stems so that they can float on the surface of the water. Leaves produced after the water begins to evaporate have shorter stems. Vernal Pool Buttercup blooms in April.
Ecology:
Vernal Pool Buttercup is usually one of the dominant species in the pools in which it occurs. It grows very fast and produces leaves which float and shade the bottom of the pool. Fast growth helps it to compete well against other plants for nutrients. The shading leaves reduce the competition from other species by preventing sunlight from reaching their seedlings.
