An Introduction to BotanyLongman, Orme, Brown, Green, and Longmans, 1839 - 594 páginas |
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Página 2
... seen to form a considerable part of the mass of the albumen of Alstromeria salsilla , see fig . 2. c . where it is 00 of an inch in diameter . Valentin has measured the thick- ness of the intercellular organic mucus in several instances ...
... seen to form a considerable part of the mass of the albumen of Alstromeria salsilla , see fig . 2. c . where it is 00 of an inch in diameter . Valentin has measured the thick- ness of the intercellular organic mucus in several instances ...
Página 3
... layers of sediment- ary matter , as may be seen in Castanea vesca ( fig . 1.a ) , and Betula alba , and in the cells below the stomates of Pinus sylvestris ( fig . CHAP . I. 3 OF THE ELEMENTARY ORGANS . Elementary Organs.
... layers of sediment- ary matter , as may be seen in Castanea vesca ( fig . 1.a ) , and Betula alba , and in the cells below the stomates of Pinus sylvestris ( fig . CHAP . I. 3 OF THE ELEMENTARY ORGANS . Elementary Organs.
Página 5
... 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 , opening into the cavity of the cells , and closed ...
... 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 , opening into the cavity of the cells , and closed ...
Página 6
... seen in the irregular half gelatinous tissue of Cereus grandiflorus ( see Plate II . fig . 1. a a ) , so that it may be supposed that they are passages to allow of permeation from one cell to another ; but this arrangement is by no ...
... seen in the irregular half gelatinous tissue of Cereus grandiflorus ( see Plate II . fig . 1. a a ) , so that it may be supposed that they are passages to allow of permeation from one cell to another ; but this arrangement is by no ...
Página 10
... seen that in many cases the partition between two cells is originally simple . 1 The bladders of cellular tissue are destitute of all perfora- tion or visible pores , so that each is completely closed up from its neighbour , as far as ...
... seen that in many cases the partition between two cells is originally simple . 1 The bladders of cellular tissue are destitute of all perfora- tion or visible pores , so that each is completely closed up from its neighbour , as far as ...
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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