. Botanisk tidsskrift. Plants; Plants -- Denmark. Fig. the 14. N. gracilis. Section parallel with corrugations. Lignification pointed. Stage of development: Fig. 7. between these, as shown in Fig. 10 and 11, two sections across the corrugations, a is the epidermal cell, b the prolongation from the adjacent one, etc. Later on the cells, and especially their prolongations, are thick- ened and lignified, a phe- nomenon otherwise somewhat rare in epidermal cells. In Fig. 12 (a section across the corrugated rim of iV. Allardi), the lignified parts are shown by punctions. The lignification indicated
. Botanisk tidsskrift. Plants; Plants -- Denmark. Fig. the 14. N. gracilis. Section parallel with corrugations. Lignification pointed. Stage of development: Fig. 7. between these, as shown in Fig. 10 and 11, two sections across the corrugations, a is the epidermal cell, b the prolongation from the adjacent one, etc. Later on the cells, and especially their prolongations, are thick- ened and lignified, a phe- nomenon otherwise somewhat rare in epidermal cells. In Fig. 12 (a section across the corrugated rim of iV. Allardi), the lignified parts are shown by punctions. The lignification indicated by Phloroglucin- muriatic-acid, occurs in the epidermis and the middle lamellae of the subepidermal layer; in the large corrugations, however, the lignification also stretches through all the parenchyma (Fig. 13). No doubt as well the shape of the collar and its surface as the lignification may augment the inflexibility of the rim. On the surface of the rim below the marginal glands, the prolongations from the epidermal cells are directed towards these, away from the cavity of the pitcher. Here the corrugated forma- tions turn into the typical conducting sur- face, extending in the various species over more or less consider- able part of the inner pitcher-wall. In N. gracilis^ where the inner part of the collar is very short, the con- ducting surface is large (Fig. 7); in N. ampullaria quite the reverse takes place (Fig. 6). Here, as Macfarlane (12) states, most of the inner part of the collar evidently functions as a conducting surface, af- fording a very insecure foothold for insects, but his description of. Fig. 15. N. Mastersiana. Stomata of the inner side of the lid. Stage of development: 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 Botaniske forening i Kbenhavn; Botaniske forening i Kbenha
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Keywords: ., bookcentury1800, bookdecade1860, bookpublisher, booksubjectplants
