. College botany; structure, physiology and economics of plants. Botany. 90 COLLEGE BOTANY minate group the buds begin to bloom at the base of the axis, while in the cymose or determinate group the buds at the tip of the axis are the first to bloonu In the raceme the flowers are arranged along an elongated axis, and there is a small leaf- like structure or bract at the base of each flower. Common examples are the lily of the valley, the wild cherry and the currant. Sometimes the ra- cemes are branched and there- fore known as comipound ra- cemes, as in the case of the false SolomoU's seal. The
. College botany; structure, physiology and economics of plants. Botany. 90 COLLEGE BOTANY minate group the buds begin to bloom at the base of the axis, while in the cymose or determinate group the buds at the tip of the axis are the first to bloonu In the raceme the flowers are arranged along an elongated axis, and there is a small leaf- like structure or bract at the base of each flower. Common examples are the lily of the valley, the wild cherry and the currant. Sometimes the ra- cemes are branched and there- fore known as comipound ra- cemes, as in the case of the false SolomoU's seal. The panicle is a loose, com- pound, somewhat irregular raceme, such as is found in the oat and some of the grasses. The thyrsus is a compact pyramidal panicle, such as is found in the lilac and the horse chestnut. The corymb is a raceme with a somewhat shortened axis and in which the peduncles {, stem for each flower) of the lower flowers are elongated so as to bring all the flowers on about the same level, as in the case of the mountain ash. The umbel has such a very short axis: that the peduncles ap- pear to arise from the same point, as in the case of the milkweed and the wild carrot. We also find the compound type of Fia. 69.—Indian turnip or Jack-in-the- pulpit; (a) bulb; (6) leaf and spathe; (c) spathe open to show spadix and newer near the 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 Cook, Melville Thurston, 1869-1952. Philadelphia and London, J. B. Lippincott Company
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbotany, bookyear1920
