Field Guide

Yellow star grass grows throughout the tallgrass prairie region. Imagine the thoughts of pioneers when they gazed upon these bright little lilies during stops along their westward journey!

Pondweeds are rooted aquatic plants with underwater leaves on long, flexible, jointed stems. Some have floating leaves, too, that are differently shaped. Missouri has about 10 species in the pondweed genus.

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.

Coontail, a common submerged aquatic plant, got its name from the crowded upper leaves, which make the stem tip appear bushy like the tail of a raccoon.

Causasian bluestem and the closely related yellow bluestem are both aggressive, weedy degraders of pasturelands that escape cultivation and endanger native habitats. Learn more about these Old World grasses, and please don’t plant them!

Johnson grass is a native of the Mediterranean that is invasive in our country. It’s a weed that infests cropland and degrades native ecosystems, and heavy infestations are found in all the major river bottoms of Missouri.

Missouri has 276 species in the grass family, including well-known crop plants and our native prairie grasses. Distinguishing between the species can be difficult, but it’s easy to learn some basics about the group.

Reed canary grass is native to Europe, Asia, and North America, and it varies quite a bit. Our native Missouri version, for instance, is quite different from the Eurasian type that has been widely introduced — and which has proven to be highly invasive.

Yellow bluestem is a nonnative, aggressive, weedy degrader of pasturelands that escapes cultivation and endangers native habitats. It blooms in Missouri in late June to July, far earlier than our native bluestems.