Barclayanthus salignus

A shrubby senecioniid aster found in northern Mexico but not entering the United States.

Pseudanthia along the roadside about halfway between Cuauhtemóc and Ciudad Chihuahua, 18 Mar 2007.

Closer view of pseudanthia between Cuauhtemóc and Ciudad Chihuahua, 18 Mar 2007.

Stem with immature pseudanthia between Cuauhtemóc and Cd. Chihuahua, 18 Mar 2007.

Last but not least, plant habit along the road about halfway between Cuauhtemóc and Cd. Chihuahua, 18 Mar 2007.