Rauhocereus is a monotypic genus of cacti (family Cactaceae). Its only species is Rauhocereus riosaniensis, which has nocturnal flowers. It is known from northern Peru (Rio Santa, Rio Zana, Chamaya and Jaén).
Rauhocereus is a monotypic genus of cacti (family Cactaceae). Its only species is Rauhocereus riosaniensis, which has nocturnal flowers. It is known from northern Peru (Rio Santa, Rio Zana, Chamaya and Jaén).
==Description== The mostly shrubby Rauhocereus riosaniensis, usually branching from the ground, often forms thickets up to 4 meters high. The upright, columnar shoots are bluish-green and have a diameter of . The 5 to 6 ribs are broken up into many warts. 2 to 8 strong spines, up to long, emerge from the woolly areoles. The lower ones are initially reddish, the upper ones yellowish. Later all become greyish-white.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).