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LEGEND 
VEGETATION 
OF 
NORTHWESTERN MEXICO 
Vegetation Areas Floristic Boundaries 
Cbihuahuan Desert: , 1 ■ • 1 
1. Creosote-yucca-mesyuiie . I 33XZ Northern limit Of 
2. Mesquite-grassland -2T m a rujrove 
3. Succulent Desert . IE == So uih Western limit 
Si,rra HoJ,eO'ciJ,„UI: otcreosoie bush 
1. Onk- apove-iun>per .IF 
2 .Pineforosi.J. .3T EZZZZ2 
^ — oOunaaru or vepetet ion 
Sonoran Desert: district 
/. Colorado Delta Association .IT 5r r 
2. CreosoU-paloverdt cacti...... "SR Note: The closed boundaries 
3 Sonoron moeyuito-yrasslana...•xR Qf vegetation distr icts, indicated 
4 Subtropical m 1 m osaeae - cacti j n ^he southern and eastern por- 
Smaloa Tropical : tions of the map, represent lack 
/. Sem. - arid scrub .X of study and not actual limits. 
2 Humid scrub ----ST 
