Upland soil less than 20 inches deep, with a coarse (sandy or gravelly) tex-ture. The shallow savanna is composed of soils that support mid and tall grass. The oaks and other hardwoods and shortleaf pine have generally increased on deeper soils. Today, there are very few loca-tions where open savanna conditions exist. Exceptions are along the rocky, very shallow areas where scattered oaks grow along rock crevices. The vegetation was formed under migratory grazing and heavy impact from bison and other native wildlife, with fires in both the dormant and growing season.
Site Composition Maximum Observed Composition Percent Counted Toward SI
Vegetation Site 1 Site 2 Site 3 Site 1 Site 2 Site 3
  Grasses 70%
 big bluestem
 switchgrass 		25 ______ _1__ ______ ______ _1__ ______
 Indiangrass 15 ______ _3__ ______ ______ _3__ ______
 little bluestem
 Canada wildrye
 sideoats grama
 purpletop
 dropseed
 Scribner panicum
 blue grama
 other natives 		30 ______ _62_ ______ ______ _30_ ______
 invasives 0 ______ _5__ ______ ___0__ ___0__ ___0__
Forbs and Legumes
 tickclover
 purple prairie clover
 catclaw sensitivebrier
 leadplant
 wild indigo
 scurfpea
 black samson
 perennial sunflower
 Pitcher's sage
 heath aster
 goldenrod
 sagewort
 western ragweed
 other natives
 invasives 		10%
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Woodies
 post oak
 blackjack oak
 sumac
 greenbrier
 buckbrush
 redbud
 poison ivy
 other natives
 invasives
20%
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