. 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. ELEMENTS OF STRUCTURAI, UOTANY. 16 stem is only a])parent. In reality there is a stem, but it is so short as to be almost indistinguishable. The leaves of tlie Hepatica are of course all radical. They will also bo found to be net-veined. 19. Tiie Flowers of the Hepatica are all upon lonp peduncles, which, like the loaves, appear to spring from the root. Naked peduncles of this kind, rising Iro
. 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. ELEMENTS OF STRUCTURAI, UOTANY. 16 stem is only a])parent. In reality there is a stem, but it is so short as to be almost indistinguishable. The leaves of tlie Hepatica are of course all radical. They will also bo found to be net-veined. 19. Tiie Flowers of the Hepatica are all upon lonp peduncles, which, like the loaves, appear to spring from the root. Naked peduncles of this kind, rising Irom the ground or near it, are called scapen. The flower- stalks of the Tulip and the Dandelion furnish other familiar examples. Let us now proceed to the flower itself. Just beneath the coloured leaves there are three leal- lets, which you will be almost certain to rcj,'ard, at first sight, as sepals, forming a calyx. It \\\\\ not be difli- cult, however, to convince you that 'his conclusion would bo incorrect. If, with the aid of your needle, you turn back these lealkts, you will readily discover, between them and the coloured portion of the flower, a vert/ sJ/'ort bit of stem {Yv^. 20), the upper end of which is the receptacle. As these leaflets, then, are on the peduncle, below the receptacle, they cannot bo sepals. They are simply small foliage leaves, to which, as they are found beside the flower, the name }>r<icts is given. Our flower, then, is apparently witliout a calvx, and in this respect is different from the Buttercup. The whole four parts of the flower not being present, it is said to be incomplete. 20. It may be explained nere thai there is an under- standing among botanists, that if the calyx and corolla are not both present it is always the corolla which "s wanting, and so it happens that the coloured part of the flower under consideiatiou, though resembling a. Please note that these images are extracted from scanned page images that may have
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, booksubjectpl
