Field Guide

White snakeroot looks very similar to thoroughworts, but it has triangular leaf blades that are more broadly angled or rounded at the base. White snakeroot is common statewide. It’s a toxic plant if eaten, so it’s good to be able to identify it.

Solomon's seal grows statewide in moist, rich earth. The greenish-white flowers dangle like little bells beneath the leaves, under the gracefully arching stems.

Similar to kudzu, Chinese yam is an aggressive vine that overtakes nearly everything within reach that stands still long enough! Learn more about this invasive plant — and please don’t plant it!

These aquatic algae look like regular vascular plants. Chara has a crisp, gritty texture, a musky odor, and gray-green, needlelike structures that resemble leaves.

Naiads are slender, narrow-leaved plants that grow completely under water and are rooted to the bottom. They never have broad, floating leaves or conspicuous flowers or seed heads.

Duckweeds are the smallest of the flowering plants. They consist of tiny, green, round, leaflike bodies that float on the water’s surface. They are an important food for waterfowl.

A tall, smooth, branching plant with red stems and juicy, dark purple berries, pokeweed is both toxic and a traditional edible potherb called poke salat. It is common statewide.

Yellow passion flower is the smaller of Missouri’s two Passiflora species. Both are vines that climb via tendrils. This one has yellowish-green flowers about an inch wide. Look for it along and south of the Missouri River.

One of the worst invasive species in the world, Japanese knotweed can thrive in many places and can even damage foundations of buildings — not to mention the harm it causes in natural habitats. Learn to recognize it so you can prevent its spread.

Large stands of wind-pollinated giant ragweed commonly form in disturbed areas, causing late-summer misery in the form of hay fever for many Missourians.