variegated Spanish violet; Yucca aloifolia
Refers to the plant Yucca aloifolia, also known as Spanish bayonet or dagger plant. The gloss 'variegated Spanish violet' is a less common English name. Primarily a botanical term.
The Yucca aloifolia is an ornamental plant with sharp leaves.
If you plant a Yucca aloifolia in the garden, be careful that children don't get hurt by its leaves.