. Foundations of botany. Botany; Botany. JFiG. 130. — Simple Umbel of Cherry. 198. The Racemes and Related Forms. — If the leaves along the stem were to become very much dwarfed and the flowers brought closer together, as they frequently are, a kind of flower-cluster like that of the currant (Fig. 129) or the lily- of-the-valley would result. Such an inflorescence is called a ra- ceme; the main flower-stalk is known as the 'peduncle ; the little individual flower-stalks are pedi- cels, and the small, more or less scale-like leaves of the peduncle are bracts} Frequently the lower pedicels of a
. Foundations of botany. Botany; Botany. JFiG. 130. — Simple Umbel of Cherry. 198. The Racemes and Related Forms. — If the leaves along the stem were to become very much dwarfed and the flowers brought closer together, as they frequently are, a kind of flower-cluster like that of the currant (Fig. 129) or the lily- of-the-valley would result. Such an inflorescence is called a ra- ceme; the main flower-stalk is known as the 'peduncle ; the little individual flower-stalks are pedi- cels, and the small, more or less scale-like leaves of the peduncle are bracts} Frequently the lower pedicels of a cluster on the general plan of the raceme are longer than the upper ones and make a some- what flat-topped cluster, like that of the hawthorn, the sheep laurel, or the trumpet creeper. This is called a corymb. In many cases, for ex- ample the parsnip, the Sweet Cicely, the gin- seng, and the cherry, a group of pedicels of nearly equal length ^, staminate flowers ;£, pistillate flowers. A B Fig. 131. —Catkins of Willow. 1 It is hardly necessary to say that the teacher will find it better in every way, if material is abundant, to begin the study of flower-clusters with the examination of typical specimens by the class,. 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 Bergen, Joseph Y. (Joseph Young), 1851-1917; Eastwood, Alice, 1859-1953. Boston, Ginn & Co.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1901
