. The elements of botany for beginners and for schools. Plants. SECTION 8.] MODIFICATIONS OF THE TYPE. 89 Gamopetalous, said of a corolla the petals of which arc thus coalescent into one body, whether only at base or higher. The union may extend to the very summit, as in Morning Glory and the like (Fig. 247), so that the number of petals iu it may not be apparent. The old name for this was Monopetalous, but that means "one-pctalled ; " while gamopetalous means " petals united," and therefore is the proper term. Polypetalous is the counterpart term, to denote a corolla of di
. The elements of botany for beginners and for schools. Plants. SECTION 8.] MODIFICATIONS OF THE TYPE. 89 Gamopetalous, said of a corolla the petals of which arc thus coalescent into one body, whether only at base or higher. The union may extend to the very summit, as in Morning Glory and the like (Fig. 247), so that the number of petals iu it may not be apparent. The old name for this was Monopetalous, but that means "one-pctalled ; " while gamopetalous means " petals united," and therefore is the proper term. Polypetalous is the counterpart term, to denote a corolla of distinct, that is, separate petals. As it means " many petalled," it is not the best possible name, but it is the old one and in almost universal use. Gamosepalous applies to the calyx when the sepals are in this way united. Polysepalons, to the calyx when of sepa- rate sepals or calyx-leaves. 258. Degree of union or of separation in descriptive botany is expressed in the same way as is the lobing of leaves (139). See Fig. 249-253, and the explanations. 259. A corolla when gamopetalous com- monly shows a distinction (well marked in Fig. 249-251) between a contracted tubular portion below, the Tube, and the spread- ing part above, the Border or Limb. The junction between tube and limb, or a more or less enlarged upper portion of the tube between the two, is the Throat. The same is true of the calyx. 260. Some names arc given to partic- ular forms of the gamopetalous corolla, applicable also to a gamosepalous calyx, such as Wheel-shaped, or Rotate; when spread- ing out at once, without a tube or with a very short one, something in the shape of a wheel or of its diverging spokes, Fig- 252 253. Salver-shaped, or Salrer-form ; when a flat-spreading border is raised on. -~~"—^ >/.»>»»*&. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustratio
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectplants, bookyear1887
