Page 231 - Interp Book

No.
No. Ground
Original truth
Mapped Type Name Brief Description Area (HA) Area (AC) Percent Samples Samples

This type is mapped in broken landscapes associated with weathering of sedimentary
rocks that do not contain much gyp. Eastern redcedar is the most common dominant,
but Pinchot's juniper may also be dominant. Other important woody species may include
skunkbush sumac, fragrant sumac, Mohr shin oak, Chickasaw plum, lotebush, Siberian
Canyon: Juniper elm, sugar hackberry, and mesquite (within range). Eastern redcedar and sandage may 22,458.7 55,496.6 0.124% 7 4
Shrubland
also be components. Short and mid-grasses such as sideoats grama, hairy grama,
tobosa, sand dropseed, little bluestem, silver bluestem, and cheatgrass occur in the
modern landscape. Grazing-tolerant forbs such as stiff greenthread, broom snakeweed,
and prairie broomweed are common.

This type is mapped in broken landscapes associated with weathering of sedimentary
Canyon: Sparsely rocks where patches of open bare ground or very open vegetation occur over fairly 47.0 116.2 0.000% 0 0
Vegetated extensive areas (>1000 sq m). Herbaceous and shrubby elements of other Canyon
types may be present.

This type circumscribes a variety of grasslands in different conditions across broad
gradients in both moisture and temperature. In the modern landscape, non-native and
grazing-tolerant species such as field brome, Bermudagrass, prairie broomweed,
Central Mixedgrass: cheatgrass, three-awn species, hairy grama, other grama species, buffalograss, and
Prairie/Pasture western ragweed are common. Species such as little bluestem, silver bluestem, and 2,162,501.4 5,343,649.0 11.946% 420 139
sideoats grama may be more important in less heavily grazed areas, especially to the
east within this type. Woody components may include mesquite (south), eastern
redcedar, Osage orange, and honeylocust.

In the modern landscape, this type is mainly represented by grazed pastures with
species such as cheatgrass, western ragweed, sand dropseed, field brome, King Ranch
Central Mixedgrass: Bluestem, and Bermudagrass common. Areas with less grazing pressure have species
Sandy such as little bluestem, sideoats grama, silver bluestem, blue grama, and big bluestem. 141,365.3 349,320.7 0.781% 25 9
Prairie/Pasture Other common species include snake broomweed, prairie broom weed, white
sagebrush, and soapweed yucca. Eastern redcedar, honey mesquite (within range),
sand sagebrush, and Chickasaw plum may be present.

This type is mapped on slopes >20%, and composition is similar to the Crosstimbers:
Crosstimbers: Eastern Redcedar Woodland and Shrubland type, although it is commonly dominated by
Eastern Redcedar taller trees rather than shrubs, and canopy closure tends to be higher. Common 3,691.6 9,122.1 0.020% 0 1
Slope Woodland and associated trees include post oak, blackjack oak, sugar hackberry, gum bumelia, winged
Shrubland
elm, and black hickory.

213