An Introduction to BotanyLongman, 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 Trichia . genus 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 Trichia . genus 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 albumen anther apex appears axis bark base become body botanists Botany bracts branches buds bundles called calyx Cand Candolle carbonic acid carpels cause cavity cells cellular tissue centre chalaza character cloth colour common consists containing corolla cotyledons cyclosis developement dicotyledons direction disk Dutrochet Edition embryo epidermis exist extremity fibres filament fleshy flowers fluid foramen fruit glands grains green growing hairs hilum inches integument kind latex layers leaf leaflets leaves light Linnæus lobes Loudon margin matter medullary rays membrane Mirbel monocotyledons nature nitrogen nucleus observed organs ovarium ovary ovule oxygen parenchyma pericarp petals petiole pistil pith placenta plants Plate plumula pollen pollen tube produced quantity radicle Raphides remarked roots round seeds separate side species specimens spiral vessels stamens stem stigma stomates structure substance surface term terminating tion tree tubes vascular vegetable veins wood woody tissue yellow