An Introduction to BotanyLongman, 1839 - 594 páginas |
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Página 23
... covered with spots that have been mistaken for pores , and which give it a peculiar character ( Plate II . fig . 3. 5. and 20. ) ; and I have re- marked an instance , in Oncidium altis- simum , of its having tubercles on its surface ...
... covered with spots that have been mistaken for pores , and which give it a peculiar character ( Plate II . fig . 3. 5. and 20. ) ; and I have re- marked an instance , in Oncidium altis- simum , of its having tubercles on its surface ...
Página 48
... covered externally by a thin membrane or epidermis , which usually adheres firmly to the cellular substance beneath it . To the naked eye it appears like a transparent homogeneous skin , but under the micro- scope it is found to be ...
... covered externally by a thin membrane or epidermis , which usually adheres firmly to the cellular substance beneath it . To the naked eye it appears like a transparent homogeneous skin , but under the micro- scope it is found to be ...
Página 50
... covered with a minute granular appearance , the nature of which is unknown , and which is not found at the lines indicating the place where the cuticle was pressed upon the united sides of cells . There are some good observ- ations upon ...
... covered with a minute granular appearance , the nature of which is unknown , and which is not found at the lines indicating the place where the cuticle was pressed upon the united sides of cells . There are some good observ- ations upon ...
Página 61
... covered with fine powder . Hairs are sometimes said to be fixed by their middle ( Plate I. fig . 10. c ) ; a remarkable structure , common to many different genera : as Capsella , Malpighia , Indigofera , & c . This expression , however ...
... covered with fine powder . Hairs are sometimes said to be fixed by their middle ( Plate I. fig . 10. c ) ; a remarkable structure , common to many different genera : as Capsella , Malpighia , Indigofera , & c . This expression , however ...
Página 62
... 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 of the stem that is formed under ...
... 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 of the stem that is formed under ...
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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