Denmoza

Denmoza is a monotypic genus of cactus with the sole species Denmoza rhodacantha, synonym Echinopsis rhodacantha, native to northwest Argentina.

== Description == Denmoza rhodocantha starts out as a globular cactus and stays that way for quite some time before growing into a column with a diameter of . The 30 or more ribs are high and wide, with a width of at the base. The first areoles are confluent and bear brownish-red spines, later grey. The 8 to 10 radial spines are slightly bent. The areoles from which the flowers sprout also produce a series of long brown bristles as well as long spines up to . The tubular flowers are scarlet. The fruits are spherical and contain shiny black-brown seeds with a diameter of about .