An Introduction to Botany |
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Page 3
... spiral . Whether it is solid or hollow has not been fully de- monstrated ... vessels . Fibre has a constant tendency to anastomosing , in consequence of ... Vascular tissue . - SECT . I. Of Cellular Tissue . CELLULAR tissue ( Contextus ...
... spiral . Whether it is solid or hollow has not been fully de- monstrated ... vessels . Fibre has a constant tendency to anastomosing , in consequence of ... Vascular tissue . - SECT . I. Of Cellular Tissue . CELLULAR tissue ( Contextus ...
Page 11
... spiral vessels , hereafter to be described , and ap- pears only to be distinguishable by the spires of the fibres not being in contact , being incapable of unrolling , having no elasticity or tenacity ; and by not being cylindrical and ...
... spiral vessels , hereafter to be described , and ap- pears only to be distinguishable by the spires of the fibres not being in contact , being incapable of unrolling , having no elasticity or tenacity ; and by not being cylindrical and ...
Page 17
... VASCULAR tissue 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 ...
... VASCULAR tissue 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 ...
Page 18
... spiral vessels . They have been considered to be composed of a fibre only , twisted spirally , without any connecting membrane ; or to have their coils connected by an extremely thin membrane , which is destroyed when the vessel unrolls ...
... spiral vessels . They have been considered to be composed of a fibre only , twisted spirally , without any connecting membrane ; or to have their coils connected by an extremely thin membrane , which is destroyed when the vessel unrolls ...
Page 19
... vessel be viewed in connection with the surrounding tissue . From some beautiful ... spiral vessel touch each other , except towards its extremities ; there they ... vessels with singular C 2 CHAP . I. 19 OF THE ELEMENTARY ORGANS .
... vessel be viewed in connection with the surrounding tissue . From some beautiful ... spiral vessel touch each other , except towards its extremities ; there they ... vessels with singular C 2 CHAP . I. 19 OF THE ELEMENTARY ORGANS .
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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.