An Introduction to Botany |
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Page 3
... consists of little bladders or vesicles of various figures , adhering together in masses . Occasionally it is composed of fibre only , unconnected by membrane . It is transparent , and in all cases colourless : when it appears otherwise ...
... consists of little bladders or vesicles of various figures , adhering together in masses . Occasionally it is composed of fibre only , unconnected by membrane . It is transparent , and in all cases colourless : when it appears otherwise ...
Page 8
... consist of membrane only , without any trace of fibre ; it is the most common , and was , till lately , supposed to be the only kind that exists . This sort of tissue is to be considered the basis of vegetable structure , and the only ...
... consist of membrane only , without any trace of fibre ; it is the most common , and was , till lately , supposed to be the only kind that exists . This sort of tissue is to be considered the basis of vegetable structure , and the only ...
Page 9
... consists of parallelopiped cellules compressed between woody fibre or vessels , with their principal diameter horizontal , and in the direction of the radii of the stem . It is so arranged that when viewed laterally it resembles the ...
... consists of parallelopiped cellules compressed between woody fibre or vessels , with their principal diameter horizontal , and in the direction of the radii of the stem . It is so arranged that when viewed laterally it resembles the ...
Page 13
... consists of tubes , may be readily seen by examining it with a high magnifying power , and also by the occasional detection of particles of greenish matter in its inside . ( Plate II . fig . 2. b . ) A very different opinion has ...
... consists of tubes , may be readily seen by examining it with a high magnifying power , and also by the occasional detection of particles of greenish matter in its inside . ( Plate II . fig . 2. b . ) A very different opinion has ...
Page 17
... consists of simple membranous tubes ta- pering to each end , but often ending abruptly , either having a fibre generated spirally in their inside , or having their walls marked by dots or transverse bars arranged in a spiral direction ...
... consists of simple membranous tubes ta- pering to each end , but often ending abruptly , either having a fibre generated spirally in their inside , or having their walls marked by dots or transverse bars arranged in a spiral direction ...
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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.