Agave Cactus, Prism Cactus
(Deutsche Beschreibung in Kürze verfügbar) A bizarre solitary cactus that forms a small, rounded to elongated stem with long, leaflike bluish tubercles that are equipped with twisted spines at the tip. The entire plant thus gives the impression of a small agave. The flowers are yellow. Leuchtenbergia principis is native to northern central Mexico.