-Plants (Kingdom Plantae)

-Vascular Plants (Phylum Tracheophyta)

-Flowering Plants (Subphylum Angiospermae)

-Dicots (Class Magnoliopsida)

-Pinks, Cactuses, and Allies (Order Caryophyllales)

-Cactus Family (Family Cactaceae)

-Globular Cacti, Moonlight Cacti, Torch Cacti, and Allies (Subfamily Cactoideae)

-Tribe Pachycereae

-Torch Cacti (Genus Pachycereus)

-Indian Comb (Pachycereus pecten-aboriginum)

The Pachycereus pecten-aboriginum is a large and impressive species of cactus native to Mexico. It grows in warm, dry areas in rocky soil, and can be found between Guerrero and Tamaulipas. Its long, slender stems are covered in sharp spines and topped with large yellow flowers.