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X Herbaceous Rangeland <br />The herbaceous Rangeland category encompasses lands <br />dominated by naturally occurring grasses and forbs as well <br />as those areas of actual rangeland which have been modified <br />for rangeland purposes and not managed using practices <br />typical of pastureland. It includes tall grass, short grass, <br />bunch grass and desert grass regions. Respectively, these <br />grass regions represent a sequence of declining amounts of <br />available moisture. Bunch grass and desert grass are found <br />in many locations, representing transitional situations to <br />desert shrub. Typical occurrences of grasslands include <br />such species as the various bluestems (Andropogon), grams <br />grasses (Bouteloua), wheatgrasses (Agropyron), needlegrasses <br />(Stipa), and fescues (Festuca). <br />D Shrub and Brush Rangeland <br />The typical shrub occurrences are found in those and <br />and semiarid regions characterized by such xerophytic <br />vegetative types with woody stems as big sagebrush (Artemisia <br />tridentata), shadscale (Artiples confertifolia), greasewood <br />(Sarcobatus vermiculatus), or creosotebush (Larrea divaricata), <br />and also by the typical desert succulent xerophytes, such <br />as the various forms of Cactus. When bottom lands and moist <br />flats are characterized by dense stands of typical wetland <br />species such as mesquite (Prosopis), they are considered <br />Wetland. Where highly alkaline soils are present, halophytes <br />• such as desert saltbrush (Atriplex) may occur. The type, <br />density, and association of these various species are useful <br />as indicators of the local hydrologic and pedologic environ- <br />ments. Also included in this category are chaparral, a <br />dense misture of broadleaf evergreen schlerophyll shrubs, <br />and the occurrences of mountain mahogany (Cercocarpus ledi- <br />folius) and scrub oaks (Quercus). <br />E Mixed Rangeland <br />When more than one-third intermixture of either <br />herbaceous or shrub and brush rangeland species occurs in a <br />specific area, it is classified as Mixed Rangeland. Where <br />the intermixed land use or uses total less than one-third <br />of the specific area, the category appropriate of the dominant <br />type of Rangeland is applied. Mixtures of herbaceous and <br />shrub or brush tundra plants are not considered Rangeland. <br />F Deciduous Forest Land <br />Deciduous Forest Land includes all forested areas having <br />a predominance of trees that lose their leaves at the end of <br />the Bost-free season or at the beginning of a dry season. <br />(Pretty lucid description, eh?). In most parts of the United <br /> <br />05~1$~8~ <br />IZ <br />