Field Guide

Not the showiest of wildflowers, American bugleweed will catch your eye with its interesting geometry. The narrow, toothed leaves are opposite on the stalks and occur at right angles to the pair below.

Common cocklebur occurs statewide in open, disturbed, lowland habitats. It is a common weed in crop fields. It has wide, rough, coarsely toothed leaves; stout, often purple-speckled stems; and characteristic burs with hooked spines.

Bur cucumber is a nonwoody, native, annual vine common in low, moist soils. It can spread across an area 20 feet wide, covering the ground and nearby shrubs. Note its lobed, gourd-family leaves, curly green tendrils, clusters of prickly, green, oval fruits, and 5-lobed, cream-colored flowers.

Violets, as a group, are fairly easy to identify, with their colorful five-petaled “faces” so welcome in springtime. Missouri has 17 species, and some are confusingly similar. This page introduces them as a group.

The leaf blades of cleft violet are highly variable, and the plant produces differently shaped leaves as the season progresses. Midseason leaves have a broad central lobe flanked by additional lobes toward the base.

Ragworts, or groundsels, have several common names, and separating the different species can be a little tricky. But members of genus Packera, with their bright yellow daisy-like flowers, are distinctive as a group. Seven species have been recorded in Missouri.

Prairie ragwort is one of seven Packera species in our state. It grows in sunny, open habitats. Look for its clusters of bright yellow, daisylike flowers in May and June.

Bladderworts are Missouri’s only carnivorous plants. They are branching, rootless, aquatic plants that tend to grow in thick, floating mats under the water. The leaves are threadlike. The flowers resemble tiny yellow snapdragons and are held above the water.

Mud plantains have glossy, rounded or kidney-shaped leaves and purple or white flowers that have six petal lobes. One petal lobe points downward. They typically grow as emergent aquatic shoreline plants.

The leaf blades of plains, or wayside violet are highly variable, and the plant produces differently shaped leaves as the season progresses. It’s quite similar to cleft violet, but the leaves are smooth and hairless.