Southwest Missouri is home to several tree species that are considered rare or endangered, highlighting the region’s rich biodiversity and the importance of conservation efforts. These trees, though scarce, play vital roles in local ecosystems and cultural heritage.

One of the most notable rare trees in the region is the Ozark Chinkapin (Castanea ozarkensis). Once a common sight in the Ozarks, this tree has suffered greatly from chestnut blight, a fungal disease that decimated its population. The Ozark Chinkapin produces edible nuts that were historically a significant food source for both wildlife and humans. Conservationists are actively working to restore this species through breeding programs and blight-resistant hybrids.