Field Guide

Common prickly ash is a thicket-forming shrub or small tree. Its compound leaves resemble of those of ash trees, but it’s in a different family. Pairs of stout, curved prickles occur at each node. Scattered statewide, but less common in the Ozarks.

Missouri has seven species of elms that grow in natural settings. Elms have tough, shock-resistant wood. In the past, some species were favorite shade trees, which is why so many towns have Elm Streets. But elms have suffered for a century from a devastating fungal disease.

Missouri has six species of ashes that you might find in natural settings. They have been very popular as shade trees, and their wood is famously useful. Ash trees of all the species in North America are currently being killed by the invasive, nonnative emerald ash borer.

Missouri has five species of maples that are either native or naturalized, plus several that are known only in cultivation. Maples are important members of native ecosystems. They also provide stunning fall color, welcome shade in summer, commercially important lumber, and sap for syrup.

Swamp privet is a straggly shrub or small tree growing in wet to swampy ground. It is quite noticeable in early spring, with the clusters of yellow flowers and bracts appearing along the gray branches before the leaves come out. In this way, it is similar in aspect to spicebush.

Giant cane is Missouri’s native species of bamboo. It is scattered mostly in our southernmost counties and the Bootheel. In its low, moist habitats, it sometimes forms canebrakes — dense, nearly pure thickets.