Mixed shrubs (_Amelanchier_, _Cercocarpos_, and _Fendlera_) form large islands in the oak chaparral, in units K, L and P. The brushy areas of oak and mixed shrub give way at the top of the slope to pinyon-juniper forest with an understory of _Artemisia nova_ and _Purshia tridentata_. The three most abundant plants in the ground cover of the shrub zones are _Solidago petradoria_, _Balsamorrhiza sagittata_, and _Comandra umbellata_. The eastern part of unit O has _Amelanchier utahensis_ in the understory, in addition to _Artemisia nova_ and _Purshia tridentata_ (Fig. 5). The northeastern corner of unit O is in pinyon-juniper woodland with an understory of _Cercocarpos montanus_. [Illustration: FIG. 7: Diagram showing the second most abundant species of plants in the ground cover of the trapping grid south of Far View Ruins.] There are two relatively pure stands of sagebrush in the grid: one is in unit N, and the other in unit F and part of unit G. As figures 5 to 8 show, unit N has a relatively pure stand of _Artemisia tridentata_ (big sagebrush), with _Artemisia ludoviciana_, _Agropyron smithii_ (western wheatgrass), and _Koeleria cristata_ (Junegrass), being most abundant in the ground cover. _Artemisia tridentata_ and _Artemisia nova_ form the overstory in unit F and part of G. The three most abundant plants in the ground cover there are _Chrysothamnus depressus_, _Solidago petradoria_, and _Penstemon linarioides_ (Figs. 6-8). [Illustration: FIG. 8: Diagram showing the third most abundant species of plants in the ground cover of the trapping grid south of Far View Ruins.] MICROCLIMATES OF DIFFERENT HABITATS Four microclimatic stations were established in units D, F, L and M of the trapping grid to record air temperatures and relative humidities at ground level. These sites were chosen as being representative of larger topographic or vegetational areas within the grid. Belfort hygrothermographs were installed on June 10, 1964, and were serviced once each week through October 31, 1964, at which time the stations were dismantled. Each station consisted of a shelter 18 by 9 by 11.5 inches, having a false top to minimize heating (Fig. 9). The shelters were painted white. Several rows of holes, each one inch in diameter, were drilled in all four sides of each shelter, to provide circulation of air. The holes were covered by brass window screening to prevent entry of insects and rodents. Preliminary tests with several U. S. Weather Bureau maximum and minimum thermometers, suspended one above the other, from the top to the bottom of the shelter, revealed that there was no stratification of air within the shelters. Nevertheless, each shelter was placed so that the sun did not strike the sensing elements of the hygrothermograph inside it.