Common Name: Yucca (Palm Lily, Adam's Needle, Joshua Tree)
Latin Name:Yucca spp.
Family Name: Agavaceae
Although this plant is high in saponins (especially the roots), it is a nice decorative plant for the tortoise enclosure and would do no harm if flowers were ingested occasionally. Sometimes sold as a house plant.
N.B. this plant is toxic to dogs, cats, and horses.