The stems are a brownish color and grow 50–90 cm high. Connected to the stem are pedicels of simple thin proximal attachments that slightly thicken to 2–8 mm. The light green leaves are arranged alternately on the stem. The common leaf shape of Rumex spiralis is lanceolate. The leaf margins are entire. The leaf venation is pinnate. The leaves are 10–15 cm long and 3–5 cm wide. The flowers are in clusters of 12–20. The cordatesepals are 7–10 mm by 8–10 mm, and have acuminate tips. The sepals also appear distinctly wrinkled and reddish-brown in color.
Rumex spiralis is endemic to southern Texas. This plant thrives on sandy shorelines.
Uses
It is typical for species of the genus Rumex to be high in oxalates which could be toxic to humans if consumed in high quantities. There are no recorded uses for this particular species.