Ceroid cactus

[1][2] The name is from the Latin cēreus, meaning "wax taper (a slender candle)", referring to the stiff, upright form of the columnar species.

Regularly having been described by Philip Miller in 1754, and included all known cacti with very elongated bodies.

The group has recruited specialists in morphology and anatomy and experts in botanical research as electron microscopy, pollen studies, chromosomes, chemistry, and DNA analysis.

[citation needed] Edible fruits: Carnegia, Myrtillocactus geometrizans, Pachycereus pringlei, Pachycereus schottii, Echinocereus: E. fendleri, E. engelmannii and other species, Corryocactus pulquiensis, Selenicereus setaceus, Peniocereus serpentinus, Cereus repandus „cadushi“, Stenocereus: S. fricii, S. griseus, S. queretaroensis, and S. stellatus also cultivated, S. pruinosus and S. thurberi wild.

Peniocereus greggii develops a large subterranean root that may be baked, peeled, and eaten.

Neoraimondia arequipensis is a Peruvian cereus reported to be used as an ingredient in the psychoactive drink called cimora, drunk at various ceremonies and containing material of the San Pedro cactus as well.