Various species of pine, of which the single-leaf pinyon is the official state tree since 1953, dominate Nevada’s woodlands.
Creosote bush is common in southern Nevada, as are many kinds of sagebrush throughout the state.
Wildflowers include shooting star and white and yellow violets.
Information from http://www.city-data.com/states/Nevada-Flora-and-fauna.html and http://nevada-history.org/images/statetree.jpg&imgrefurl=http://nevada-history.org/icons.html&usg=__LAOCIewY4Wsj_x6f6-k3qcjOIVY=&h=204&w=168&sz=17&hl=en&start=6&um=1&tbnid=dZBqKY5C7QB9-M:&tbnh=105&tbnw=86&prev=/images%3Fq%3Dnevada%2Bstate%2Btree%2Bsingle-leaf%2Bpinon%26um%3D1%26hl%3Den%26sa%3DG
Images from Google.