An Introduction to Botany |
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Page 2
... developed in many of the most imperfectly organised plants , such as Scleroderma and other fungi ; and as it is difficult to conceive how that can be a mere modification of membrane which is generated inde- pendently of it , which has ...
... developed in many of the most imperfectly organised plants , such as Scleroderma and other fungi ; and as it is difficult to conceive how that can be a mere modification of membrane which is generated inde- pendently of it , which has ...
Page 6
... developed . There does not , however , appear to be any evidence of this , which must be considered , at present , a gratuitous hypothesis , if , indeed , it were not rather said to be an untenable one . No one has ever seen the ...
... developed . There does not , however , appear to be any evidence of this , which must be considered , at present , a gratuitous hypothesis , if , indeed , it were not rather said to be an untenable one . No one has ever seen the ...
Page 7
... developed at the rate of near 4,000,000,000 per hour , or of more than sixty - six millions in a minute . of an inch in do , it may be The cellules of cellular tissue are always very small , but are exceedingly variable in size . The ...
... developed at the rate of near 4,000,000,000 per hour , or of more than sixty - six millions in a minute . of an inch in do , it may be The cellules of cellular tissue are always very small , but are exceedingly variable in size . The ...
Page 18
... developed , it must be con- fessed that direct observation is scarcely sufficient to settle that point . It is easy to prove the existence of a membrane , but it is difficult to demonstrate whether it is external or internal with ...
... developed , it must be con- fessed that direct observation is scarcely sufficient to settle that point . It is easy to prove the existence of a membrane , but it is difficult to demonstrate whether it is external or internal with ...
Page 41
... developed ; for they differ from hairs only in their degree of composition . They are of two kinds , Scales properly so called , and Ramenta . Care must be taken not to confound scales of this description with scales of the stem , to be ...
... developed ; for they differ from hairs only in their degree of composition . They are of two kinds , Scales properly so called , and Ramenta . Care must be taken not to confound scales of this description with scales of the stem , to be ...
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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.