Cereus insularisCereus insularis is a species of columnar cactus in the family Cactaceae. It is found in Brazil.DescriptionCereus insularis grows as a shrub with deep green shoots that are 2 to 3 centimeters in diameter and are often branched. There are six to eight straight ribs. The gray areoles on it are close together. The resulting 12 to 15 unequal, slender, needle-like spines are brownish yellow to greyish brown and up to 1.2 centimeters long.DistributionCereus insularis is found in coastal areas of the islands belonging to Brazil in the Fernando de Noronha archipelago.phylogenySource:TaxonomyThe first description was published in 1884 by William Botting Hemsley. A nomenclatural synonym is Monvillea insularis Britton & Rose.