Yucca treculeana Carrière is a plant in the family Asparagaceae, native to Texas, New Mexico and Coahuila. Common names include Spanish dagger, Spanish bayonet and Don Quixote's lance. Yucca treculeana is a large, tree-like species up to 10 m (33 feet) tall, often branching above the ground. Leaves are up to 128 cm (50 inches) long. Flowers are cream-colored, sometimes tinged with purple. Fruits are fleshy and succulent, up to 19 cm (7.5 inches) long.