. 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; Botanique; Botanique. 80 ELEMENTS OF STRUrTUllAIj BOTANY. more accurately the (, wliicii adheres to the whole surface of the ovary, aud expands above into four lou[j teeth. The ovary therefore is inferior, and the calyx of course superior, in this flower. As the sepals unite below to form the tube the calyx is gam- osepalous. The corolla consists of four petals, free from each other, and is consequently
. 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; Botanique; Botanique. 80 ELEMENTS OF STRUrTUllAIj BOTANY. more accurately the (, wliicii adheres to the whole surface of the ovary, aud expands above into four lou[j teeth. The ovary therefore is inferior, and the calyx of course superior, in this flower. As the sepals unite below to form the tube the calyx is gam- osepalous. The corolla consists of four petals, free from each other, and is consequently polypetalous. It is also regular, the petals being alike in s'zeand shape. Each petal is narrowed at the base into what is called the oUiw of the petal, the broad part, as in the ordinary foliago-leaf, being the blade. /Ihe stamens arc eight in number (octandrous), four short and four long, and arc attached to the calyx (perigynous). 41. The pistil has its three parts, ovary, style, and stigma, very distinctly marked. The stigma consists . of four long lobes, which curl outwards after the flower opens. The style is long and slender. The examina- tion of the ovary requires much care. You will get the V best idea of its structure by taking one which has just burst open, and begun to discharge its seeds (Fig. 41). The outside will then be seen to consist of four pieces (valves), whilst the centre is occupied by a slender four-winged col- umn, (Fig. 42), in the grooves of which the seeds are compactly arranged. The pistil thus consists. Fig. 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; Winnipeg : W. J. Gage
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, booksubjectpl
