Field Guide

Eastern hop hornbeam is named for its fruits, which are clusters of flattened, papery, scalelike sacs arranged in an overlapping pattern, like scales on a pinecone — resembling the hops that beer is made from.

Exotic willows are available at lawn and garden centers, but there are several willow species that are native to Missouri. Most are rather humble colonizers of gravel bars, riverbanks, and lakesides. Many are important for human economic interests. All have a place in our wild ecosystems.

River birch is a native tree easily identified by its reddish, papery, peeling bark. It is used extensively in landscaping, where many-stemmed groupings are planted in moist places in yards and along streams and ponds.

The dwarf chestnut oak, though only 3–10 feet tall and the shortest of Missouri's oaks, can nevertheless produce abundant acorns that are relished by several types of birds and mammals.

“Way down yonder in the pawpaw patch” is an old song you might be familiar with — but today, surprisingly few Missourians know a pawpaw tree when they see one. This is a good tree to know, especially when the large, sweet fruit are ripening!

Osage orange is a densely branched, short-trunked, thorny tree. It bears weird-loooking, softball-sized, chartreuse, brainlike fruits, which often lie beneath the tree in abundance in autumn.

Willow oak's leaves are narrow, pointed, and willowlike, and like willows, this oak is associated with wet ground. In Missouri, willow oak is only found natively in our southeastern counties.

You might see common buckthorn for sale at a nursery, but don’t buy it! At least six states have banned this invasive exotic, and the difficult-to-control plant is causing problems here in Missouri, too. Learn how to identify it — and avoid it!

Russian olive is a small tree with distinctive silvery leaves. It was introduced to America in the late 1800s and widely planted as an ornamental and windbreak. But in many states it has proven to be invasive. It is not recommended here in Missouri.

Shingle oak got its name because the naturalist who discovered it noticed that French colonists in Illinois were using the wood to make roofing shingles. The leaves resemble those of laurel (bay), lacking lobes or teeth — but laurel trees don't bear acorns!