| The Colorado Desert area in the east is drier, and creosote bushes are abundant, together with some cholla cactus and spidery ocotillo. |
| Among these the cholla is at once one of the most fascinating and the most exasperating. |
| The vegetation is a mix of grasses, annual herbs and isolated patches of mesquite, cholla, ephedra and yucca. |
| But still you'd bump into a prickly pear or cholla cactus and have to stop and pull the thorns out of person's leg or shoe. |
| As they reached the open trail, thrush and to-hee fluttered from the cholla. |
| So if you are to see this phenomenon you will have to be on time, for cholla never wait. |
