An Introduction to Botany |
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Page viii
... botanists , upon some points connected with this subject , so that it has been found expedient to enter occasionally into much detail , for the purpose of satisfying the student of the accuracy of the facts and reasonings upon which he ...
... botanists , upon some points connected with this subject , so that it has been found expedient to enter occasionally into much detail , for the purpose of satisfying the student of the accuracy of the facts and reasonings upon which he ...
Page ix
... botanists in their systematic works , but an explan- ation of the principles by which the limits of genera and species are determined . It also explains the mode of obtaining a correct view of vegetation , of con- ducting the ...
... botanists in their systematic works , but an explan- ation of the principles by which the limits of genera and species are determined . It also explains the mode of obtaining a correct view of vegetation , of con- ducting the ...
Page 2
... botanists , who have described the existence of holes or pores in the membrane of tissue , and have even thought they saw a distinct rim to them ; but this idea , which probably originated in imperfect observation with ill - constructed ...
... botanists , who have described the existence of holes or pores in the membrane of tissue , and have even thought they saw a distinct rim to them ; but this idea , which probably originated in imperfect observation with ill - constructed ...
Page 32
... Botanists have not agreed as to the exact nature of the cuticle ; while the greater number incline to the opinion that it is an external layer of cellular tissue in a dry and compressed state ; others , among whom are included both ...
... Botanists have not agreed as to the exact nature of the cuticle ; while the greater number incline to the opinion that it is an external layer of cellular tissue in a dry and compressed state ; others , among whom are included both ...
Page 36
... botanist . The former case is one in which the quadrangular figure is caused by the cellules being straight ; I am not aware if Mr. Brown means the same thing . I have never been so fortunate as to discover the mem- brane which Mr ...
... botanist . The former case is one in which the quadrangular figure is caused by the cellules being straight ; I am not aware if Mr. Brown means the same thing . I have never been so fortunate as to discover the mem- brane which Mr ...
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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.