Pachycereus pecten-aboriginum (commonly known as hairbrush or Indian comb) is a columnar cactus plant native to Mexico.

The areoles bear rigid, sharp, white to gray spines, that are up to 1 to 3 cm (0.39 to 1.18 in) long which may be curved on mature stems.

The floral bracts are linear with long-attenuated tips covering the development of flower buds.

It splits at maturity to reveal a thin layer of firm, red, juicy pulp and shiny black seeds, each about 0.5 cm long.

[8] Its range extends throughout the western states from Baja California through Sinaloa and Sonora to Chiapas.

In the Sonoran desert, the flowers stay open longer in the day to attract both nocturnal and diurnal pollinators.

[11] Nathaniel Lord Britton and Joseph Nelson Rose placed them in the genus Pachycereus in 1909.

The Mayo people made tortillas from the ground seeds mixed with some corn meal.

The cactus flesh was cooked in salted water and the solution was applied to infected wounds three times daily, followed by a sulfathiazole powder.