Dichanthelium polyanthes, commonly known as roundseed panicgrass, is a perennial grass species native to eastern North America. This species is a member of the grass family, Poaceae, and is characterized by its relatively compact growth habit and its contribution to native grassland ecosystems. It plays a role in supporting local biodiversity and can be found in various natural settings. Physically, Dichanthelium polyanthes typically forms dense tufts or clumps, reaching heights that generally range from 30 to 90 centimeters. Its leaves are linear to lanceolate, measuring about 15 to 30 centimeters in length and 3 to 8 millimeters in width. The leaf blades are often flat and can be somewhat rough to the touch. The ligule, the membrane at the base of the leaf blade where it meets the stem, is typically a dense fringe of hairs. The inflorescence is a panicle, which can be open or somewhat contracted, bearing numerous small flowers. These flowers develop into characteristic round seeds, giving the grass its common name. The seeds are typically ovate to nearly spherical and are borne on slender pedicels. The native range of Dichanthelium polyanthes extends across much of the eastern United States, from the Atlantic coast westward into the central plains, and also into parts of southeastern Canada. It thrives in a variety of open habitats, including dry to mesic prairies, savannas, open woodlands, fields, and disturbed areas. This grass prefers well-drained soils and can tolerate a range of soil types, from sandy to loamy. While it is adapted to natural conditions, it can also be found in managed landscapes where conditions are suitable. Ecologically, roundseed panicgrass serves as a food source for various wildlife, including insects and birds, which consume its seeds. Its dense growth can also provide habitat and cover for small animals. While not widely cultivated for ornamental purposes, its native status and ecological contributions make it a valuable component of restoration projects aimed at re-establishing native plant communities. There is no significant documented agricultural, medicinal, or culinary use for Dichanthelium polyanthes. An interesting characteristic of Dichanthelium polyanthes, shared with other species in the genus, is its ability to produce cleistogamous flowers. These are self-pollinating flowers that remain closed, ensuring seed set even when cross-pollination is unlikely. This adaptation can be advantageous in environments where pollinators are scarce or unreliable. The round shape of its seeds is a distinguishing feature that aids in its identification and contributes to its common name.