. Bulletin. Natural history; Natural history. 404 Illinois Natural History Survey Bulletin Vol. 26. Art. 5 t>arius was the dominant jjrass. Bouteloua lurtipendula, as well as B. hirsuta, was scattered throughout. Polyyala incarnnta grew on the hluft top. and Arteniis'ta cau- data grew as scattered individuals in the sandy loess. This prairie, which served as pastureland, was visited September 15. Psoralen teiiuiflora, Onosmodiuui occi- deiilale, and Ambrosia coronopifolia. Walnut Creek.—The site of this 2- acre prairie occupies one southwest- and two west-facing spurs of the bluff north of
. Bulletin. Natural history; Natural history. 404 Illinois Natural History Survey Bulletin Vol. 26. Art. 5 t>arius was the dominant jjrass. Bouteloua lurtipendula, as well as B. hirsuta, was scattered throughout. Polyyala incarnnta grew on the hluft top. and Arteniis'ta cau- data grew as scattered individuals in the sandy loess. This prairie, which served as pastureland, was visited September 15. Psoralen teiiuiflora, Onosmodiuui occi- deiilale, and Ambrosia coronopifolia. Walnut Creek.—The site of this 2- acre prairie occupies one southwest- and two west-facing spurs of the bluff north of which W^ilnut Creek enters the Illi- nois River valley in the northwest quar-. Fig. 18.—Spurs of Mud Creek hill prairie (center of picture) in northwest Morgan County. In the distance beyond the Mud Creek prairie are slopes, some of which support prairie. 1949; Julv 6, 1950; Mav 18. 1951; and March 25, 1952. Northeast Meredosia was the first of those hill prairies along the Illinois River observed by A. G. Vestal, who visited it in the spring of 1931 in company with James M. Schopf and Herman B. Wascher. They were impressed by the persistence of native prairie vegetation and by the lack of serious erosion on the steep loess slopes, over which the continu- ous trampling of cattle had worn steplike cowpaths. BluflFs.—When this site was visited July 6, 1950, a mixture of prairie and for- est covered about 8 acres of the west- facing slope of the bluff in the southwest quarter of section 10, T. 15 N., R. 13 W., north of Bluffs, Scott County. Prai- rie species included Lespedeza capitata, ter of section 26, T. 14 N., R. 13 W., about 4 miles west of Winchester, Scott Countv. When visited August 13, 1950, and April 24 and May 18, 1951, the base of the slope contained a mixture of prairie and shrubbery. The spur slopes contained prairie, with Andropogon scoparius the dominant grass. The coves between the spurs supported prairie and some woody plants. The top of the ridge was very
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
