Leuchtenbergia is a genus of cactus which has only one species, Leuchtenbergia principis (agave cactus or prism cactus). It is native to north-central Mexico (San Luis Potosi, Chihuahua). The genus is named after Maximilian Eugen Joseph (1817–1852), Duke of Leuchtenberg and amateur botanist.
Leuchtenbergia is a genus of cactus which has only one species, Leuchtenbergia principis (agave cactus or prism cactus). It is native to north-central Mexico (San Luis Potosi, Chihuahua). The genus is named after Maximilian Eugen Joseph (1817–1852), Duke of Leuchtenberg and amateur botanist.
==Description== It is very slow-growing, grow individually, sprouts only occasionally and reaches heights of 20 to 70 cm high, with a cylindrical stem which becomes bare and corky at the base with age, sprouts only occasionally and reaches heights of (rarely up to ). The roots are large and fleshy, the shoots spherical to briefly cylindrical. It has long, slender, grayish-green tubercles 6–12 cm long, with purplish-red blotches at their tips. The tubercles are topped with papery spines, making the plant resemble an agave; old, basal tubercles dry up and fall off. After four years or so, yellow, fragrant, funnel-shaped flowers 5–6 cm diameter may be borne at the tubercle tips at the end of the areoles near the body and open during the day. Their pericarpel is scaled. The egg-shaped to oblong fruits are dry when ripe. The fruit is smooth and green, 3 cm long and 2 cm broad. It has a large, tuberous taproot. They contain broadly oval, black to brown seeds long and in diameter.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).