The stoloniferous growth of Brook Paspalum results in the formation of dense mats of vegetation in which rice cannot grow. A distinct feature of Brook Paspalum is its winged rachis. In this view the front view shows the spikelets and the back reveals the wide (winged) rachis that hides the spikelets. The vein of the leaf of Brook Paspalum shows some whitening, but is not always distinctly so.

The ligule of brook paspalum is short, membranous and has a clean top margin. The node stem and leaves of brook paspalum are glabrous, that is, completely devoid of any pubescence or hairs. Brook paspalum has a solid stem which can be seen in cross section.