An Introduction to Botany |
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Page 7
... vol . 18. p . 212. The mode in which cellular or any other tissue is really formed , is buried in mystery . It has been suspected by Mr. Valentine , and I be- lieve the same idea has also occurred to Mr. Bauer , that it may be caused by ...
... vol . 18. p . 212. The mode in which cellular or any other tissue is really formed , is buried in mystery . It has been suspected by Mr. Valentine , and I be- lieve the same idea has also occurred to Mr. Bauer , that it may be caused by ...
Page 9
... vol . xxi . 3. The square ; in the cuticle of some leaves , in the bark of many herbaceous plants , and frequently in pith . ( Plate I. fig . 13. ) 4. The prismatical ; in some pith , in liber , and in the vicinity of vessels of any ...
... vol . xxi . 3. The square ; in the cuticle of some leaves , in the bark of many herbaceous plants , and frequently in pith . ( Plate I. fig . 13. ) 4. The prismatical ; in some pith , in liber , and in the vicinity of vessels of any ...
Page 15
... vol . xvi . tab . 21. ) But I think it possible to demonstrate that this is an optical deception , and that the supposed perforations are of the same nature as the similar punctuations in cel- lular tissue , viz . semitransparent ...
... vol . xvi . tab . 21. ) But I think it possible to demonstrate that this is an optical deception , and that the supposed perforations are of the same nature as the similar punctuations in cel- lular tissue , viz . semitransparent ...
Page 24
... vol . xxi . p . 224. ) ; for the following reasons : If it were such a modification of the spiral vessel as Kieser supposes , it would have none of those internal septa by which it is particularly known . The same remark applies to the ...
... vol . xxi . p . 224. ) ; for the following reasons : If it were such a modification of the spiral vessel as Kieser supposes , it would have none of those internal septa by which it is particularly known . The same remark applies to the ...
Page 34
... vol . xxi . ) Nevertheless , there are anatomists of high reputation who entertain a directly opposite opinion ; denying the existence of passages , and considering the sto- mata rather in the light of glands . Nees von Esenbeck and ...
... vol . xxi . ) Nevertheless , there are anatomists of high reputation who entertain a directly opposite opinion ; denying the existence of passages , and considering the sto- mata rather in the light of glands . Nees von Esenbeck and ...
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Common terms and phrases
acid Adolphe Brongniart albumen anther apex appearance appendages arrangement axis bark base become body botanists bractea branches Brown buds called calyx Cand Candolle carpella cavity cells cellular tissue cellules centre chalaza characters Class colour common Compositæ compound considered consists corolla cotyledons cuticle dehiscence developed dicotyledons direction disk dissepiments distinct distinguished ducts earth elongated embryo exist extremely filament fleshy flowers fluid fructification fruit genera genus granules hairs hilum indehiscent inflorescence integuments kind latter leaf leaflets leaves Linnæus lobes margin medullary rays membrane Mirb Mirbel modifications monocotyledons nature observed organs ovarium ovula ovulum oxygen parenchyma peculiar pericarpium petals petiole pistillum pith placenta plants Plate plumula pollen produced racters radicle receptacle remarkable roots seed sepals separate side sometimes species spiral vessels sporules stamens stem stigma stomata structure substance surface term terminating testa tree tube valves vascular vegetation veins wood woody fibre
Popular passages
Page 6 - Thysanotus fasciçularii, the flowers of which are of a deep brilliant violet, with a remarkably satiny lustre, that appearance will be found to arise from each particular cell containing a single drop of...
Page 217 - ... in its substance, and of evaporating pores on its surface, enables the crude fluid sent from the roots to be elaborated and digested until it becomes the peculiar secretion of the species; the contraction of a branch and its leaves forms a flower ; the disintegration of the internal tissue of a petal forms an anther; the folding inwards of a leaf is sufficient to constitute a...
Page 525 - ... verging to green. Again, the ranunculus, which is originally of an intense yellow, sports into scarlet, red, purple, and almost any colour but blue. White flowers, which have a tendency to produce red, will never sport to blue, although they will to yellow ; the rose, for example, and chrysanthemums. It is also probable that white flowers with a tendency to produce blue, will not vary to yellow.