Cereus insularis

Cereus insularis is a species of columnar cactus found in Brazil.

Description
Cereus 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 (rarely up to 3) centimeters long.

Distribution
Cereus insularis is found in coastal areas of the islands belonging to Brazil in the Fernando de Noronha archipelago.

Taxonomy
The first description was published in 1884 by William Botting Hemsley. A nomenclatural synonym is Monvillea insularis (Hemsl.) Britton & Rose (1920).