About Hexasepalum teres (Walter) J.H.Kirkbr.
Hexasepalum teres (Walter) J.H.Kirkbr. is a flowering plant species in the coffee family, with the common names poorjoe and rough buttonweed. This is an annual plant native to Mexico, Central America, South America, the West Indies, and the United States, where it ranges from California to Florida and from Kansas to Massachusetts. The species has also become naturalized in the Netherlands, the Canary Islands, Western Africa, Angola, China, Japan, Korea, India, and Madagascar. Hexasepalum teres produces a thin stem that grows either erect or prostrate, and rarely reaches a maximum height of 65 cm (26 in). It bears opposite leaves that are stiff, dark green, elliptical, pointed, and rough in texture, growing up to 3 cm (1.2 in) long. A flower sits cradled at the base of each pair of leaves. The small flower ranges in color from white to pinkish-purple, and has four stiff petal-like lobes that measure up to 12 mm (0.47 in) long and 10 mm (0.39 in) wide. Its fruit is ellipsoid and splits into two nutlets. This plant is most commonly found in sandy areas including desert dunes and river floodplains.
