PLATE 4 



BARBERRIES— RUES 

 BARBERRY FAMILY 



1. Berberis repens : Barberry 



2. Berberis Fremontii 



3. Berberis Fendleri 



NETTLE FAMILY 



4. Celtis occidentalis : Hackberry 



RUE FAMILY 



5. Ptelea trifoliata: Hop Trefoil 



6. Thamnosma texana 



CALTROP FAMILY 

 7. Covillea tridentata : Creosote Bush 



