An Introduction to BotanyLongman, Orme, Brown, Green, and Longmans, 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 usually adheres firmly to the To the naked eye it appears To the naked membrane or epidermis , which cellular substance beneath it . like a transparent homogeneous skin , but under the micro- scope it is ...
... covered externally by a thin usually adheres firmly to the To the naked eye it appears To the naked membrane or epidermis , which cellular substance beneath it . like a transparent homogeneous skin , but under the micro- scope it is ...
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 anther apex appears arranged axis bark base become bladders body botanists bracts branches brown buds bundles called calyx Candolle carbonic acid carpels cavity cells cellular tissue centre chalaza colour colourless common considered consists corolla cotyledons dehiscence developement dicotyledons direction disk dissepiments distinct Dutrochet elongated embryo Endogens epidermis exist Exogens external extremity fibres fleshy flowers fluid fruit glands grains granules green growing hairs hilum indehiscent inflorescence integument kind layers leaf leaflets leaves Linnæus lobes margin matter medullary rays membrane midrib Mirb Mirbel modifications Mohl monocotyledons nature nucleus observations organs ovary ovule oxygen parenchyma peculiar pericarp petals petiole pistil pith placenta plants Plate pollen produced quantity radicle receptacle remarkable roots round seeds separate side sometimes species spiral vessels sporangium stamens stem stigma stomates structure substance surface term terminating tion tree tubes valves vascular vegetable veins wood woody tissue yellow
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