An Introduction to BotanyLongman, Orme, Brown, Green, and Longmans, 1839 - 594 páginas |
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Página v
... produced by the combination of a very small number of distinct organs , and the most important phenomena are distinctly ex- plained by a few simple laws of life and structure . In the execution of these objects , I have followed very ...
... produced by the combination of a very small number of distinct organs , and the most important phenomena are distinctly ex- plained by a few simple laws of life and structure . In the execution of these objects , I have followed very ...
Página 5
... produced by the ad- hesion and separation at regular intervals of a thread developed spirally within a membranous sac ( Trans . Soc . Arts , xlix . ) . A nearly similar opinion was previously offered by Mohl , who considers the dots on ...
... produced by the ad- hesion and separation at regular intervals of a thread developed spirally within a membranous sac ( Trans . Soc . Arts , xlix . ) . A nearly similar opinion was previously offered by Mohl , who considers the dots on ...
Página 11
... produces the flickering lustre that is perceived . The cause of colour in plants will be spoken of hereafter in the ... produce new vesicles from their sides externally ; and Turpin asserts that they also con- tain molecules , which are ...
... produces the flickering lustre that is perceived . The cause of colour in plants will be spoken of hereafter in the ... produce new vesicles from their sides externally ; and Turpin asserts that they also con- tain molecules , which are ...
Página 14
... produced , of which the following are the most worth noticing : 1. The oblong ; in the stem of Orchis latifolia , and in the inside of many leaves . ( Plate I. fig . 9. ) 2. The lobed ( Plate I. fig . 2. f ) ; in the inside of the leaf ...
... produced , of which the following are the most worth noticing : 1. The oblong ; in the stem of Orchis latifolia , and in the inside of many leaves . ( Plate I. fig . 9. ) 2. The lobed ( Plate I. fig . 2. f ) ; in the inside of the leaf ...
Página 30
... produced all follow the direction of the spire . The termination of spiral vessels is , beyond all doubt , conical . This was stated by Nees von Essenbeck , in his Handbuch der Botanik , published in 1820 ; and in 1824 Dutrochet ...
... produced all follow the direction of the spire . The termination of spiral vessels is , beyond all doubt , conical . This was stated by Nees von Essenbeck , in his Handbuch der Botanik , published in 1820 ; and in 1824 Dutrochet ...
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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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