An Introduction to BotanyLongman, 1839 - 594 páginas |
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Página 13
... medullary rays , and principal part of the bark in the stem of Exogens , the soft substance of the stem of Endogens , the delicate membranes of flowers and their appendages , and both the hard and soft parts of fruits and seeds . It ...
... medullary rays , and principal part of the bark in the stem of Exogens , the soft substance of the stem of Endogens , the delicate membranes of flowers and their appendages , and both the hard and soft parts of fruits and seeds . It ...
Página 14
... medullary rays . This consists of prismatical bladders compressed between woody tissue or vessels , with 14 BOOK I. ORGANOGRAPHY .
... medullary rays . This consists of prismatical bladders compressed between woody tissue or vessels , with 14 BOOK I. ORGANOGRAPHY .
Página 75
... medullary rays . It would seem as if certain unknown forces were occasionally so exerted upon a vesicle of cellular tissue as to stimulate it into a preternatural degree of activity , the result of which is the production of vessels ...
... medullary rays . It would seem as if certain unknown forces were occasionally so exerted upon a vesicle of cellular tissue as to stimulate it into a preternatural degree of activity , the result of which is the production of vessels ...
Página 85
... medullary rays ; this is called EXOGENOUS structure . In the Cane , on the contrary , neither bark , nor pith , nor wood , nor medullary rays , are distinguishable ; but the transverse section exhibits a larger number of holes irregu ...
... medullary rays ; this is called EXOGENOUS structure . In the Cane , on the contrary , neither bark , nor pith , nor wood , nor medullary rays , are distinguishable ; but the transverse section exhibits a larger number of holes irregu ...
Página 86
... medullary rays . The pith is a cylindrical or an- gular column of cellular tissue , arising at the point of separation between the root and stem and ter- minating at the leaf - buds , with all of which , whether they are lateral or ...
... medullary rays . The pith is a cylindrical or an- gular column of cellular tissue , arising at the point of separation between the root and stem and ter- minating at the leaf - buds , with all of which , whether they are lateral or ...
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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