Yucca species, in the lily family (Liliaceae), are relatively large succulent plants, typically 2-4 metres tall. They have stiff, perennial leaves and they produce large heads of creamy-white, waxy flowers. They are common in the higher elevations of many North and Central American deserts, and are tolerant of cold winters.
All Yucca species have an intimate mutualistic association with tiny yucca moths (genus Tegeticula), which pollinate the flowers.
Soaptree yucca and spanish bayonet. Soaptree yucca (Yucca elata), characterised by its narrow leaves and erect flowering spike. The plant shows the remains of the fruit capsules from the previous flowering season. Soaptree yucca gains its name from the high content of saponins in the trunk and roots. These soap-like compounds were used for shampoo and soap by indigenous Indians.
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