trees

Powell, A.M. 1998. Trees and shrubs of the Trans-Pecos and adjacent areas. Univ. Texas Press, Austin. 498 pp.

• trees
• Chihuahuan desert
• local flora
• shrub
• Perityla huecoensis

Powell, A.M. 1988. Trees and shrubs of Trans-Pecos Texas, including Big Bend and Guadalupe Mountains National Parks. Big Bend Natural History Association, Big Bend National Park, Texas. 536 pp.

• Texas
• trees
• woody plants
• field guide
• natural history
• shrub

Little, E.L., Jr. 1979. Checklist of United States trees (native and naturalized). Agriculture Handbook No. 541. U.S. Forest Service, Washington, D.C. 375 pp.

• trees
• checklist
• hybrid
• range