An Introduction to BotanyLongman, 1832 - 557 pàgines |
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Pàgina 102
... Compositæ , the involucrum often consists of several rows of imbricated bractea , and has received a variety of names , for none of which does there appear to be the least occasion . Linnæus called it calyx communis , Necker ...
... Compositæ , the involucrum often consists of several rows of imbricated bractea , and has received a variety of names , for none of which does there appear to be the least occasion . Linnæus called it calyx communis , Necker ...
Pàgina 107
... Compositæ , it becomes what is called a receptacle ; or , in the lan- guage of some botanists , the receptacle of the flower ( fig . 72. ) . 122 72 73 74 When the receptacle is not fleshy , but is surrounded. CHAP . II . COMPOUND ORGANS ...
... Compositæ , it becomes what is called a receptacle ; or , in the lan- guage of some botanists , the receptacle of the flower ( fig . 72. ) . 122 72 73 74 When the receptacle is not fleshy , but is surrounded. CHAP . II . COMPOUND ORGANS ...
Pàgina 108
... Compositæ , or , in the language of M. Richard , phoranthium ; the former term is that generally adopted . But if the receptacle is fleshy , and is not enclosed within an involucrum , as in Dorstenia and Ficus ( fig . 73. ) , it is then ...
... Compositæ , or , in the language of M. Richard , phoranthium ; the former term is that generally adopted . But if the receptacle is fleshy , and is not enclosed within an involucrum , as in Dorstenia and Ficus ( fig . 73. ) , it is then ...
Pàgina 109
... Compositæ , in which he is followed by Sir James Edward Smith , Link , and others . This opinion arises from a distinction being drawn between the axis of a spike and the receptacle of Composite ; but , as I have already stated , the ...
... Compositæ , in which he is followed by Sir James Edward Smith , Link , and others . This opinion arises from a distinction being drawn between the axis of a spike and the receptacle of Composite ; but , as I have already stated , the ...
Pàgina 111
... Compositæ , is produced ; which is often named by modern botanists anthodium ; a term invented by Ehrhart , and to which there seems to be no objection . It was called cephalanthium by Richard , and calathidium by Mirbel . The flowers ...
... Compositæ , is produced ; which is often named by modern botanists anthodium ; a term invented by Ehrhart , and to which there seems to be no objection . It was called cephalanthium by Richard , and calathidium by Mirbel . The flowers ...
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Altres edicions - Mostra-ho tot
Frases i termes més freqüents
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
Passatges populars
Pàgina 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...
Pàgina 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...
Pàgina 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.