Field Guide

Bull thistle is a weedy introduction from Europe, found statewide. To tell it from our other thistles, note its stems with spiny-margined wings, and its leaves with the upper surface strongly roughened with stiff, spiny bristles.

Tall thistle is a native thistle that can grow to be 10 feet tall! To identify it, notice its leaves, which are unlobed (though they may be wavy or have only shallow, broad lobes), are felty-hairy beneath, and have prickles only along the edges.

Hibiscus in Missouri? You bet! Hairy rose mallow is a native perennial whose 6-inch-wide blossoms look a lot like those of its tropical relatives. The stalks can get woody and can grow to 8 feet tall.

Many Missouri children learn about this orange-flowered native plant by playing with the juicy green seedpods, which, when ripe, "explode" upon the slightest touch. This is jewelweed's mechanism for seed dispersal, and it's the reason for the name "touch-me-not."

There are 3 species of Aureolaria in Missouri. Only combleaf yellow false foxglove is annual, has fernlike, delicately dissected leaves, and glandular hairs. It occurs in the Ozarks.

Yellow lady’s slipper is found statewide. It is among our showiest native orchids, and suffers from its popularity. Although orchids rarely survive transplanting, people try digging them up anyway.

Our two Missouri jewelweeds occur in the same habitats, often side by side, and even botanists can’t tell them apart without the flowers. Pale touch-me-not is the one with the lemon-yellow flowers!

Running buffalo clover spreads by sending out long, creeping runners. Now endangered, this native perennial once flourished along streams and buffalo trails throughout the grasslands of the eastern and central United States.

The showy, bright yellow flowers of celandine poppy really stand out in the shady woods and valleys where this plant grows. You should consider this species when you are planting a shade garden!

The smooth, finely divided, fernlike foliage of pale corydalis is similar to that of the related wildflower Dutchman’s breeches. But in pale corydalis, the small yellow flowers appear tubelike and lipped.