Field Guide

Its range and interesting, variable leaf shapes identify water oak. Like many species that require wet lowland forests, water oak has been declining in our state due to long-term extensive disruption of natural habitats in our Bootheel counties.

A beautiful tree, swamp white oak features bicolored leaves that are shiny, dark green above and downy white below. When a breeze sets them in motion, their wavy or lobed shapes add a calm grace to a summer's hike.

Blackjack oak is common in dry upland woods, especially ones that have been badly burned. It can grow on the poorest soils. It is rugged but not worth much as lumber. It's one of the first trees to be used as fuel.

Sassafras, with its aromatic oval, mitten- , and trident-shaped leaves, is rich in both human and natural history, and it can be a spectacular tree for fall color.

White mulberry was introduced from Asia for its berries and as fodder for an attempted silkworm industry. Birds have helped spread white mulberry so much that in many places it is more common than our native red mulberry.

A member of the maple family, box elder is often confused with poison ivy because its compound leaves sometimes grow in threes (though also in fives). A fast-growing tree, its winged seeds betray its relationship to other maples.

Don’t kid yourself about this invasive, exotic vine: Japanese honeysuckle is an aggressive colonizer that shades out native plants and harms natural communities. Learn how to recognize it!

Ozark witch-hazel is a large native shrub that grows along dry, rocky streambeds in southern and east-central Missouri. The yellow, ribbonlike flowers bloom as early as January. In the fall, the seeds are ejected forcefully, to a distance of up to 30 feet!

Native to Europe and Asia, European, or black alder is planted widely as an ornamental. In some parts of the United States and elsewhere in the world, this species becomes weedy, even invasive. In Missouri, you are most likely to encounter it in landscaped areas, and not in the wild.