. The botanical class-book, and flora of Pennsylvania, designed for seminaries of learning and private classes. 173. The Cyme (Fig. 84,) has the general appearance ofthe Corymb, but is remarkably distinguished by its centrifu-gal evolution, and by its branches being repeatedly 2 or 3forked, as in the Hydrangea, Viburnum. This mode of inflo-rescence is only found in plants with opposite leaves, and hdeveloped in the following manner: 58 THE FLOWER. The terminal flower, which expands first, is borne upon apeduncle of two or more nodes; from these nodes, pairs ofBecondary opposite peduncles arise
. The botanical class-book, and flora of Pennsylvania, designed for seminaries of learning and private classes. 173. The Cyme (Fig. 84,) has the general appearance ofthe Corymb, but is remarkably distinguished by its centrifu-gal evolution, and by its branches being repeatedly 2 or 3forked, as in the Hydrangea, Viburnum. This mode of inflo-rescence is only found in plants with opposite leaves, and hdeveloped in the following manner: 58 THE FLOWER. The terminal flower, which expands first, is borne upon apeduncle of two or more nodes; from these nodes, pairs ofBecondary opposite peduncles arise, each terminated by aflower, each of which, like the first, may a,gain have two ormore nodes, and terminated by a flower, 174. The Cyme as exemplified in the Arcnaria strict*(Fig. 84,) enables us to study this mode of inflorescence toadvantage. 175, The Fascicle (Fig. 85,) is a modification of theCyme, in which the flowers are crowded, and nearly sessile,as is seen in the Sweet William, and Wild Pink, (Dianthuaarmerius.) 85. 86,. 176. The Vertical, or Verficillaster (Fig. 86,) is a mod*ification of the Cyme, peculiar to Labiate plants, where twosuch reduced Cymes occupy the opposite axils of each pair ofleaves, as in the Horehound, Catnip, Mint. 177. Verticillate flowers are sometimes said to be whorled,which is not really the case- True whorled flowers occuronly in plants with whorled leaves, as in the Ilippurus. THE FLOWER. 178. A complete flower (Fig. 87,) consists of the follow-ing members : 1st, the floral envelopes, called, collectively,the perianth. 2nd, the stamens. 3rd, the pistils; and4th, the RECEPTACLE, or TOIIUS. 179. The floral envelopes consist of one or more circles crwhorls of leaves surrounding the essential organs, namely,the stamens and pistils. The outer envelope is called theealyx, and its leaves arc termed sepals. The inner is calledcorolla, and its leaves petah. CALYX AND COROLLA. 59 87; 88. UPrP (F!g. 8S;) idaal plan of a flower like that shotrn in (Fi
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