. The plant societies of Chicago and its vicinity. Plant ecology; Botany; Botany. CHICAGO AND VIC IN ITT. 45 plants is an abundance of Solidago nemoralis. Other species growing in the crevices or on the first soil which is formed on the rock face are Potentilla arguta, Verbascum Thapsus (Mullein), Heuchera hispida (Alum root), Poa compressa (Wire grass), etc. At Thornton there is a rock. Fig. 26.—Slope of limestone ledge at Stony Island, showing mosses and higher plants establishing themselves in the crevices. outcrop which gradually recedes from the surface, and it is possible to tell by the
. The plant societies of Chicago and its vicinity. Plant ecology; Botany; Botany. CHICAGO AND VIC IN ITT. 45 plants is an abundance of Solidago nemoralis. Other species growing in the crevices or on the first soil which is formed on the rock face are Potentilla arguta, Verbascum Thapsus (Mullein), Heuchera hispida (Alum root), Poa compressa (Wire grass), etc. At Thornton there is a rock. Fig. 26.—Slope of limestone ledge at Stony Island, showing mosses and higher plants establishing themselves in the crevices. outcrop which gradually recedes from the surface, and it is possible to tell by the vegetation where the rock surface dips considerably under the surface of the soil. Where the soil is shallow the dominant plant is Poa compressa, but as the soil layer deepens it becomes gradually replaced by Poa pratensis (Blue grass). Similarly, at Stony -Island, crevices can be distinguished in a covered horizontal rock surface by a sudden change from the xerophytic plants of the shallow soil, that Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cowles, Henry Chandler, 1869-1939. Chicago, The Geographic Society of Chicago
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1901
