Diversidad de las gramíneas de Durango, México

durango is a state located at the north-central part of mexico, because of its geographical position it has a rugose topography, a variable climate and geology which confers to it a relatively high floristic richness compared to other mexican states. the presence of varied grasses in this area has permitted to it being a cattle production in the last century, herrera (2001) reported 97 genera and 338 species of grasses from durango, that compared with other entities results to be surpassed only for 5 mexican states: veracruz, jalisco, puebla, oaxaca and sinaloa based on the number of species (dávila y col., 2006). the distribution of grasses growing in response to the climatic conditions of the state is shown, as well as other species which are interesting because of the condition to subsist: 1) endemic species [chaboissaea subbiflora, reederochloa eludens, muhlenbergia michisensis] and rare species [aristida gibbosa, festuca breviglumis, rhipidocladum racemiflorum]; 2) species adapted to saline, alcaline or gypsofile soils [bouteloua ramosa, distichlis spicata, pleuraphis mutica, reederochloa eludens, sporobolus airoides]; 3) introduced species to be cultivated and escaped from cultivars [cenchrus ciliaris, cynodon dactylon, chloris gayana, eleusine multiflora, lolium multiflorum, melinis repens, sorghum halepense, urochloa máxima]; 4) species which are aquatic or subaquatic [echinochloa crusgalli, glyceria striata, leersia hexandra, leptochloa fusca, paspalum pubiflorum].