This is a widely scattered from east-central states to Mexico but not generally common and often overlooked (FNA 25); its single known location in Missouri has been recently lost (Ladd & Thomas 2015). To an experienced panicologist, this taxon is generally distinct in appearance and habitat, being concentrated along sandy banks of larger streams and rivers. It can intergrade with microcarpon and perhaps dichotomum. Among these three taxa, yadkinense is distinguished by its relatively large, pointed spikelets (ca. 1.9-2.6 mm long), and lower sheaths are often yellowish-brown with pale mottles between veins. Most colls. have spikelets shorter than the 2.3-2.5 mm originally noted by Hitchcock & Chase (1950). The coll. from CARL (MUR) has a short-hairy ligule suggesting hybridization with acuminatum or a related species. Initial analysis of DNA suggests some distinction from modt dichotomum (Majure et al. 2023).