-Plants (Kingdom Plantae)

-Vascular Plants (Phylum Tracheophyta)

-Flowering Plants (Subphylum Angiospermae)

-Dicots (Class Magnoliopsida)

-Caltrops and Ratanies (Order Zygophyllales)

-Caltrops Family (Zygophyllaceae)

-Subfamily Tribuloideae

-Genus Kallstroemia

-Big Caltrop (Kallstroemia maxima)

Big caltrop is a flowering plant native to warm temperate and tropical regions of the world. It can be found in dry grasslands, meadows, and disturbed soils in its range. It is a common weed in much of the world, and can be used for a variety of medicinal purposes. This plant has a round, low-growing habit, with deeply divided leaves and small yellow flowers. Its fruits are small, spiny, green balls that turn brown as they mature.