Thompsons Yucca (Yucca thompsoniana: Agavaceae) One of four (4) species of Yucca found in Big Bend National Park. Thompsons Yucca grows tree-like and reaches heights of 1.8-3.7 m (6-12 ft) tall. Photographed near Panther Junction, Big Bend National Park, Brewster County, Texas, USA. Chihuahuan Desert at ca. 1,148 m (3,767 ft) elevation.