A plant genus of the family CACTACEAE. Species with cylindrical joints are called Cholla; flat jointed ones are Prickly-pear.

Conjugates of betalamic acid with cyclo-dopa, both of which derive from TYROSINE. They appear similar to INDOLES but are biosynthesized by a different path and contain N+. Members are red or violet COLORING AGENTS found in the Caryophyllales order of PLANTS and some BASIDIOMYCETES.

A plant genus in the ANACARDIACEAE family known for the Pistachio nuts and for gum Mastic.

The cactus plant family of the order Caryophyllales, subclass Caryophyllidae, class Magnoliopsida. Cacti are succulent perennial plants well adapted to dry regions.

A plant genus of the family CLUSIACEAE. Members contain benzophenones.