. Botanisk tidsskrift. Plants; Plants -- Denmark. 137 little older, of N. Allardi. By growth in the sub-epidermal layers a swelling, at b, has risen. This is the first beginning of the inner part of the rim. The surface a—h, later on developed as the corrugated surface, is here a little concave. As in Fig. 1, the outer surface is covered with long, branched hairs. Here and there are also seen peltate hairs, which are like- wise in majority on the face a—c, and on the adjacent part of the lid. On the swelling of this, which is here greatly developed, they are of a considerable size. Stomata on
. Botanisk tidsskrift. Plants; Plants -- Denmark. 137 little older, of N. Allardi. By growth in the sub-epidermal layers a swelling, at b, has risen. This is the first beginning of the inner part of the rim. The surface a—h, later on developed as the corrugated surface, is here a little concave. As in Fig. 1, the outer surface is covered with long, branched hairs. Here and there are also seen peltate hairs, which are like- wise in majority on the face a—c, and on the adjacent part of the lid. On the swelling of this, which is here greatly developed, they are of a considerable size. Stomata on the inner side of the lid are not seen here. Spiral- cells, not yet fully developed, exist as in Fig. 1. It was re- markable, that all the sections, treated with Potassium hy- drate at once showed a deep brown hue, especially in the hairs; even with a weak solution of the said liquor the phenome- non appeared. The supposition that the contents might be Tan- nin, was to be confirmed by treatment of the objects with 1. Sulphate of Iron, 2. Bi- chromate of Potassium, 3. Ghlorzink of [odine, 4. The Reagent of Gardiner-Rose. In young stages the Tannin occurs both in the hairs, and in the outer and inner undifferentiated epidermis of the pitcher. As to what biological part the Tannin- plays in these organs of Nepenthes, it has hitherto been quite im- possible to say the decisive word. Fig. 3, a section through the rim of N. Mastersiana, shows plainly the two parts of the collar, a the outer, h the inner; the level a—h is more concave. The outer surface of the pitcher and its lid is furnished with comparatively few of the long, branched hairs; peltate hairs, on the other hand, appear abundantly. It seems, also with regard to other species, that the peltate hairs develop, when the long, branched ones begin to fall, peltate hairs being seen in various young stages of development. The face. Fig. 3. N. Mastersiana. s = sheath, filled with Please note that these images are e
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Keywords: ., bookcentury1800, bookdecade1860, bookpublisher, booksubjectplants
