An Introduction to BotanyLongman, Orme, Brown, Green, and Longmans, 1839 - 594 sidor |
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Sida 5
... portions of it . He He says it may be distinctly seen by the aid of a powerful microscope that the little circles which are visible on the surface of the tissue of Palm - trees are passages ( meatus ) in the thickness of the membrane ...
... portions of it . He He says it may be distinctly seen by the aid of a powerful microscope that the little circles which are visible on the surface of the tissue of Palm - trees are passages ( meatus ) in the thickness of the membrane ...
Sida 31
... portion of a branch or stem still green , so as to separate the coils of the spires . The fibre will be found to have a peristaltic motion , which lasts for a considerable time . An appearance of the same nature has been described by ...
... portion of a branch or stem still green , so as to separate the coils of the spires . The fibre will be found to have a peristaltic motion , which lasts for a considerable time . An appearance of the same nature has been described by ...
Sida 62
... portion only of the surface of any thing is covered by hairs , that portion is uniformly the ribs or veins . According to De Candolle , hairs are not found either upon true roots , ex- cept at the moment of germination , nor upon any ...
... portion only of the surface of any thing is covered by hairs , that portion is uniformly the ribs or veins . According to De Candolle , hairs are not found either upon true roots , ex- cept at the moment of germination , nor upon any ...
Sida 70
... portion of the axis is called the neck or collum , ( coarcture of Grew , noeud vital of Lamarck , limes communis , or fundus plantæ , of Jungius , ) and has been thought by some to be the seat of vegetable vitality ; an erroneous idea ...
... portion of the axis is called the neck or collum , ( coarcture of Grew , noeud vital of Lamarck , limes communis , or fundus plantæ , of Jungius , ) and has been thought by some to be the seat of vegetable vitality ; an erroneous idea ...
Sida 88
... portion lying next the alburnum . But it is necessary to look at the organisation of the bark with more precision , if we are to understand all the peculiarities found in its many modi- fications . It appears to me that the observations ...
... portion lying next the alburnum . But it is necessary to look at the organisation of the bark with more precision , if we are to understand all the peculiarities found in its many modi- fications . It appears to me that the observations ...
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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 colour common considered consists containing corolla cotyledons cyclosis developement dicotyledons direction disk distinct Dutrochet elongated embryo epidermis exist external 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 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 sometimes species specimens spiral vessels stamens stem stigma stomates structure substance surface term terminating tion tree tubes vascular vegetable veins wood woody tissue yellow
Populära avsnitt
Sida 593 - Dr. Ure's Dictionary of Arts, Manufactures, and Mines : Containing a clear Exposition of their Principles and Practice.