An Introduction to BotanyLongman, Orme, Brown, Green, and Longmans, 1839 - 594 páginas |
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Página viii
... become public property : they are thrown into the common stock for mutual bene- fit ; and it is only in the case of debatable opinions , or of any recent and unconfirmed observations , that it really interests the world that authorities ...
... become public property : they are thrown into the common stock for mutual bene- fit ; and it is only in the case of debatable opinions , or of any recent and unconfirmed observations , that it really interests the world that authorities ...
Página 8
... become tubes did not at first differ from other cells in any thing except their form ; their sides were uniform , thin , colourless , and transparent ; but they soon began to thicken , to lose their transparency , and to be marked all ...
... become tubes did not at first differ from other cells in any thing except their form ; their sides were uniform , thin , colourless , and transparent ; but they soon began to thicken , to lose their transparency , and to be marked all ...
Página 24
... tubes are often or , and in the Lime they average about Link states ( Elementa , p . 85. ) that they are very large in trees of hot 1 countries . The sides of woody tissue become thickened , 24 BOOK I. ORGANOGRAPHY .
... tubes are often or , and in the Lime they average about Link states ( Elementa , p . 85. ) that they are very large in trees of hot 1 countries . The sides of woody tissue become thickened , 24 BOOK I. ORGANOGRAPHY .
Página 25
John Lindley. countries . The sides of woody tissue become thickened , as they advance in age , by the successive deposits of layer after layer in their interior ( see fig . 1. ) ; this is particularly ob- servable in the liber , and ...
John Lindley. countries . The sides of woody tissue become thickened , as they advance in age , by the successive deposits of layer after layer in their interior ( see fig . 1. ) ; this is particularly ob- servable in the liber , and ...
Página 28
... become much more apparent than if the vessel be viewed in con- nection with the surrounding tissue . From some beautiful preparations of this kind by Mr. Valentine and Mr. Griffith , it appears that the membrane is external : in the ...
... become much more apparent than if the vessel be viewed in con- nection with the surrounding tissue . From some beautiful preparations of this kind by Mr. Valentine and Mr. Griffith , it appears that the membrane is external : in the ...
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Palavras e frases frequentes
Adolphe Brongniart anther apex appears arranged axis bark base become bladders body botanists bracts branches buds bundles called calyx Candolle carbonic acid carpels cause cavity cells cellular tissue centre character colour colourless common compound considered consists corolla cotyledons cyclosis cyme dehiscence developement direction disk dissepiments distinct Dutrochet elongated embryo Endogens epidermis exist Exogens external extremity fibres fleshy flowers fluid fruit glands grains granules green growing hairs inflorescence integument kind layers leaf leaflets leaves Linnæus lobes margin matter medullary rays membrane midrib Mirbel modifications Mohl monocotyledons nature nucleus observations organs ovary ovule oxygen parenchyma peculiar pericarp petals petiole pistil pith placenta plants Plate pollen pollen tube produced quantity radicle remarkable roots round seeds separate side sometimes species spiral vessels stamens stem stigma stomates structure substance surface term terminal tion tree tube valves vascular vegetable veins wood woody tissue yellow