. The elements of structural botany [microform] : with special reference to the study of Canadian plants, to which is added a selection of examination papers. Plant anatomy; Botany; Plantes; Botanique. 46 ELEMENTS OF STRUCTURAL BOTANY. instead of the tuft of silky hairs (technically called the pappus) which surmounts the ovary, there may be, as in Sunflower, p few teeth-like projections, or scales, or a mere rim hardly to be distinguished at all. 63. The Order is easily recognized by the following characters: 1. Theflotvers, or floret)^, are in heads on a common re- ceptacle^ and surrounded hy
. The elements of structural botany [microform] : with special reference to the study of Canadian plants, to which is added a selection of examination papers. Plant anatomy; Botany; Plantes; Botanique. 46 ELEMENTS OF STRUCTURAL BOTANY. instead of the tuft of silky hairs (technically called the pappus) which surmounts the ovary, there may be, as in Sunflower, p few teeth-like projections, or scales, or a mere rim hardly to be distinguished at all. 63. The Order is easily recognized by the following characters: 1. Theflotvers, or floret)^, are in heads on a common re- ceptacle^ and surrounded hy an involucre. 2. The stamens are inserted on the corolla, and are united hy their anthers {synyenesiouf^J. 3. The style is 3-lohed at the aj^ex. 64. Representatives of this Family are so nunerous that it is needless to give a list. Specimens exhibiting all the variations in regard to the corollas, pappus, ^c, should be gathered and notes made of their structure. In Part IT. will be found a very full account of all the species likely to be met with, and the exercise book has a number of blank schedules specially arranged for Com- posites. 65. Catnip. Note carefully the appearance of the stem. It is square. The flowers are in axillary clusters. The calyx is a tube (Fig. 59), terminating in live sharp teeth, and you may observe that the tube is a little longer on the upper side (that is, the side tc*nards the stem) than on the lower. The corolla is somewhat peculiar. It has somewhat the appearance of a wide-open mouth, and is known as a labiate or two-lipped Fig. 59. corolla. The upper lip is erect and notched at the apex. Fig. 59.âFlower of Catnip,. if â â¢a. 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 Spotton, H. B. (Henry Byron), 1844-1933. Toronto : W. J. Gage
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, booksubjectpl
