An Introduction to BotanyLongman, Orme, Brown, Green, and Longmans, 1839 - 594 páginas |
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Página 3
... developed in many of the most imperfectly organized plants , such as Scleroderma and other fungi , and it is difficult to conceive how that can be a mere modification of membrane which is generated independently of it , which has no ...
... developed in many of the most imperfectly organized plants , such as Scleroderma and other fungi , and it is difficult to conceive how that can be a mere modification of membrane which is generated independently of it , which has no ...
Página 5
... developed spirally within a membranous sac ( Trans . Soc . Arts , xlix . ) . A nearly similar opinion was previously offered by Mohl , who considers the dots on the membrane of tissue to be thinner portions of it . He says it may be ...
... developed spirally within a membranous sac ( Trans . Soc . Arts , xlix . ) . A nearly similar opinion was previously offered by Mohl , who considers the dots on the membrane of tissue to be thinner portions of it . He says it may be ...
Página 8
... developed from the simple cell , and are conse- quently modifications of it ; or we must suppose , what we have no ... development of Marchantia he speaks to the following effect . I at first found nothing but a mass of tissue composed ...
... developed from the simple cell , and are conse- quently modifications of it ; or we must suppose , what we have no ... development of Marchantia he speaks to the following effect . I at first found nothing but a mass of tissue composed ...
Página 13
... developed at the rate of near 4,000,000,000 per hour , or of more than sixty - six millions in a minute . Cellular tissue grows for a long time after its generation , and hence the bulk of a given part may be much in- creased without ...
... developed at the rate of near 4,000,000,000 per hour , or of more than sixty - six millions in a minute . Cellular tissue grows for a long time after its generation , and hence the bulk of a given part may be much in- creased without ...
Página 28
... developed , an examination of it ex- ternally , by means of longitudinal sections of the surrounding parts , is scarcely sufficient to settle that point . The best mode of examination is to separate a vessel entire from the rest of the ...
... developed , an examination of it ex- ternally , by means of longitudinal sections of the surrounding parts , is scarcely sufficient to settle that point . The best mode of examination is to separate a vessel entire from the rest of 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