An Introduction to BotanyLongman, 1839 - 594 páginas |
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Página 5
... grains of semi - trans- parent matter sticking to the membrane : he found that boiling them in hot nitric acid rendered them opaque , and that treating them with a solution of caustic potash restored their transparency , a property ...
... grains of semi - trans- parent matter sticking to the membrane : he found that boiling them in hot nitric acid rendered them opaque , and that treating them with a solution of caustic potash restored their transparency , a property ...
Página 12
... grains . It appears that in Confervæ the increase in number of the cells takes place by the internal division of the parent cells . In Conferva glomerata the last joint is always as long as those below it , only rather more slender ...
... grains . It appears that in Confervæ the increase in number of the cells takes place by the internal division of the parent cells . In Conferva glomerata the last joint is always as long as those below it , only rather more slender ...
Página 44
... grains of chlorophyll , as Mohl has shown . In the milky juice of Euphorbia , they assume the singular appearance represented at Plate II . fig . 19 . b . , looking like short cylinders enlarged at each end into a round head : double ...
... grains of chlorophyll , as Mohl has shown . In the milky juice of Euphorbia , they assume the singular appearance represented at Plate II . fig . 19 . b . , looking like short cylinders enlarged at each end into a round head : double ...
Página 92
... grain . They are composed of muriform cellular tissue ( Plate I. fig . 7. ) , often not consisting of more than a single layer of cellules ; but sometimes , as in Aristolochias , the number of layers is very considerable . In horizontal ...
... grain . They are composed of muriform cellular tissue ( Plate I. fig . 7. ) , often not consisting of more than a single layer of cellules ; but sometimes , as in Aristolochias , the number of layers is very considerable . In horizontal ...
Página 181
... grains , varying in size , and enclosing a fluid containing molecular The pollen - grains are often called granules . matter . To this important part of the organisation of perfect plants N 3 CHAP . 11 . 181 POLLEN . -
... grains , varying in size , and enclosing a fluid containing molecular The pollen - grains are often called granules . matter . To this important part of the organisation of perfect plants N 3 CHAP . 11 . 181 POLLEN . -
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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