-Plants (Kingdom Plantae)

-Vascular Plants (Phylum Tracheophyta)

-Flowering Plants (Subphylum Angiospermae)

-Dicots (Class Magnoliopsida)

-Gentians, Dogbanes, Madders, and Allies (Order Gentianales)

-Madder Family (Family Rubiaceae)

-Subfamily Rubioideae

-Tribe Spermacoceae

-Genus Crusea

-Crusea parviflora

Crusea (common name Saucer Flower) is a genus of flowering plants in the Rubiaceae family.The genus is found in Arizona, New Mexico, Mexico, and Central America.