An Introduction to BotanyLongman, Orme, Brown, Green, and Longmans, 1839 - 594 páginas |
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Página 3
... tubes of the fig . 1 . liber is in many plants thickened successively by the deposit inside of con- centric layers of sediment- ary matter , as may be seen in Castanea vesca ( fig . 1.a ) , and Betula alba , and in the cells below the ...
... tubes of the fig . 1 . liber is in many plants thickened successively by the deposit inside of con- centric layers of sediment- ary matter , as may be seen in Castanea vesca ( fig . 1.a ) , and Betula alba , and in the cells below the ...
Página 8
... tubes , pointed at each end , and unquestionably adhering by one of their ends to the inside of the sac ; others from polygons passed to a spherical form in rounding off their angles . As they grew older , other very important changes ...
... tubes , pointed at each end , and unquestionably adhering by one of their ends to the inside of the sac ; others from polygons passed to a spherical form in rounding off their angles . As they grew older , other very important changes ...
Página 11
... tubes , an observation which has been confirmed by Slack . It has been stated by Mirbel that the same thing occurs ... tube or utricle generated another externally , so that sometimes the membranes of newly - formed tissue had the ...
... tubes , an observation which has been confirmed by Slack . It has been stated by Mirbel that the same thing occurs ... tube or utricle generated another externally , so that sometimes the membranes of newly - formed tissue had the ...
Página 17
... tubes that form the elaters of Jungermannia , apparently constitutes another form of tissue of this order ( Plate I. fig . 17. ) , and has recently been found by Corda among Fungi in the genus Trichia . B. Fibre without Membrane . It is ...
... tubes that form the elaters of Jungermannia , apparently constitutes another form of tissue of this order ( Plate I. fig . 17. ) , and has recently been found by Corda among Fungi in the genus Trichia . B. Fibre without Membrane . It is ...
Página 19
... tube of Linum pallescens . In structure it is usually granular ; in consistence it varies between extreme softness and such a degree of toughness , as enables it to resist the pressure of the compressorium without altering its form . In ...
... tube of Linum pallescens . In structure it is usually granular ; in consistence it varies between extreme softness and such a degree of toughness , as enables it to resist the pressure of the compressorium without altering its form . In ...
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Palavras e frases frequentes
Adolphe Brongniart anther apex appears arranged axis bark base become bladders body botanists bracts branches brown buds bundles called calyx Candolle carbonic acid carpels cavity cells cellular tissue centre chalaza colour colourless common considered consists corolla cotyledons dehiscence developement dicotyledons direction disk dissepiments distinct Dutrochet elongated embryo Endogens epidermis exist Exogens external extremity fibres fleshy flowers fluid fruit glands grains granules green growing hairs hilum indehiscent inflorescence integument kind layers leaf leaflets leaves Linnæus lobes margin matter medullary rays membrane midrib Mirb Mirbel modifications Mohl monocotyledons nature nucleus observations organs ovary ovule oxygen parenchyma peculiar pericarp petals petiole pistil pith placenta plants Plate pollen produced quantity radicle receptacle remarkable roots round seeds separate side sometimes species spiral vessels sporangium stamens stem stigma stomates structure substance surface term terminating tion tree tubes valves vascular vegetable veins wood woody tissue yellow
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