. 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. ELEMENTS OF STRUCTURAL BOTANY. 17 ?,:. Fig. 23. a:e not lobeJ, as in the other two plants, but are in- dented on the edge. They are also net-veiued. '23. Coming fco the flower (Fig. 23) we find a circle, or whorl; of bright yellow leaves, looking a good deal like the petals of the Buttercup, but you will look in vain for the corre- sponding sepals. In this case there ,>;. is no whorl of bract
. 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. ELEMENTS OF STRUCTURAL BOTANY. 17 ?,:. Fig. 23. a:e not lobeJ, as in the other two plants, but are in- dented on the edge. They are also net-veiued. '23. Coming fco the flower (Fig. 23) we find a circle, or whorl; of bright yellow leaves, looking a good deal like the petals of the Buttercup, but you will look in vain for the corre- sponding sepals. In this case there ,>;. is no whorl of bracts to mislead you. V Are we to say, then, that there is no calyx ? If we adhere to the under- standing mentioned when describing the Hepatica, we must suppose tlie coroUu to be wanting, and then the bright yellow leaves of our plant will be the sefuds, and will together constitute the calyx. As to the number of the sepals, you will find, as in the Hepatica, some variation. Whilst the normal number is five, some flowers will be found to have an many as nine. 24. The stamens are next to be examined, but you should first satisfy yourselves as to whether the calyx is polysepalous or otherwise, and whether it is free from the other floral leaves or not. If your examination ibe properly made, it will show you that the calyx [is free and polysepalous. The stamens are very much like those of the Butter- icup and Hepatica. They are numerous, they have both anthers and filaments, and they shed their pollen [through slits on the outer edges of the anthers. They fare all .separate from each other (polyandrous) and are jail inserted on the receptacle. On this latter account Ithey are said to be 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 Macoun, John, 1831-1920; Spotton, H. B. (Henry Byron), 1844-1933.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, booksubjectpl
