Lesser speargrass (Heteropogon contortus) has been used in some traditional medicine systems, particularly in parts of Asia and Africa, for a variety of ailments, including swelling and inflammation. Historical ethnobotanical records suggest that decoctions or poultices made from the plant have been applied to swollen glands or lymph nodes, likely based on its perceived anti-inflammatory or cooling properties. However, the documentation of such uses is sparse and often anecdotal, with few detailed records specifying its exact preparation or effectiveness for lymphatic issues.

There is currently no robust scientific evidence supporting the efficacy of Lesser speargrass in treating swollen lymph nodes or glands. Modern pharmacological studies on this plant are limited, and those that do exist focus primarily on its antimicrobial or wound-healing properties rather than any direct action on the lymphatic system. As such, its use for swollen lymph nodes is justified primarily by traditional knowledge rather than scientific validation, and the overall quality of evidence is weak.

In summary, while Lesser speargrass has a history of use in traditional medicine for inflammatory conditions, including swollen glands, there is a lack of rigorous scientific studies to substantiate these claims.