An Introduction to BotanyLongman, Orme, Brown, Green, and Longmans, 1839 - 594 páginas |
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Página 27
... divided in opinion ; some be- lieving that the fibre coheres independently of any membrane , others doubting or denying the mode in which the vessels terminate ; some describing the vessels as ramifying ; and a fourth class ascribing to ...
... divided in opinion ; some be- lieving that the fibre coheres independently of any membrane , others doubting or denying the mode in which the vessels terminate ; some describing the vessels as ramifying ; and a fourth class ascribing to ...
Página 52
... divided by a line . ( Plate III . fig . 11. ) In this state the stomate is at rest : but in others the kidney - shaped bodies are much more curved ; their sides are more separated from each other ; and there is no elevated ridge : at ...
... divided by a line . ( Plate III . fig . 11. ) In this state the stomate is at rest : but in others the kidney - shaped bodies are much more curved ; their sides are more separated from each other ; and there is no elevated ridge : at ...
Página 71
... divided , when they do not surround the stem , as in the apple and other alternate - leaved genera ; or entire , when they do surround it , as in grasses and umbelliferous plants : they are further said to be pervious , when the pith ...
... divided , when they do not surround the stem , as in the apple and other alternate - leaved genera ; or entire , when they do surround it , as in grasses and umbelliferous plants : they are further said to be pervious , when the pith ...
Página 72
... divided into trees , shrubs , and herbs . If the branches are perennial , and supported upon a , trunk , a tree ( arbor ) is said to be formed ; for a small tree , the term arbus- culus is sometimes employed . When the branches are ...
... divided into trees , shrubs , and herbs . If the branches are perennial , and supported upon a , trunk , a tree ( arbor ) is said to be formed ; for a small tree , the term arbus- culus is sometimes employed . When the branches are ...
Página 87
... divided into irregular cavities , as in the Horse Chestnut , the Rice - paper plant , and many others ; or that it is so much lacerated as to lose all resemblance to its original state , and to remain in the shape of ragged fragments ...
... divided into irregular cavities , as in the Horse Chestnut , the Rice - paper plant , and many others ; or that it is so much lacerated as to lose all resemblance to its original state , and to remain in the shape of ragged fragments ...
Índice
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19 | |
27 | |
110 | |
121 | |
146 | |
277 | |
289 | |
455 | |
461 | |
466 | |
467 | |
473 | |
478 | |
481 | |
506 | |
302 | |
309 | |
330 | |
345 | |
389 | |
429 | |
448 | |
525 | |
534 | |
544 | |
552 | |
571 | |
587 | |
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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 colour common considered consists containing corolla cotyledons cyclosis developement dicotyledons direction disk distinct Dutrochet elongated embryo epidermis exist external 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 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 sometimes species specimens spiral vessels stamens stem stigma stomates structure substance surface term terminating tion tree tubes vascular vegetable veins wood woody tissue yellow
Passagens conhecidas
Página 593 - Dr. Ure's Dictionary of Arts, Manufactures, and Mines : Containing a clear Exposition of their Principles and Practice.