An Introduction to BotanyLongman, Orme, Brown, Green, and Longmans, 1839 - 594 páginas |
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Página iii
... species systematically had still to be discovered ; while scarcely a trace existed of those modern views which have raised the science from the mere business of the herb - gatherer to a station among the most in- tellectual branches of ...
... species systematically had still to be discovered ; while scarcely a trace existed of those modern views which have raised the science from the mere business of the herb - gatherer to a station among the most in- tellectual branches of ...
Página vii
... species , after its station has been discovered by classification , and also to put those who have not had the opportunity of examining a plant themselves into possession of all the facts necessary to acquire a just notion of its ...
... species , after its station has been discovered by classification , and also to put those who have not had the opportunity of examining a plant themselves into possession of all the facts necessary to acquire a just notion of its ...
Página 16
... species , and Purkinje has shown , by a series of excellent observations and drawings , that it constitutes the lining of the valves of almost all anthers . The forms under which it exists in these parts are far more various than those ...
... species , and Purkinje has shown , by a series of excellent observations and drawings , that it constitutes the lining of the valves of almost all anthers . The forms under which it exists in these parts are far more various than those ...
Página 36
... species . Sometimes they accompany the spiral vessels , forming a part of the bundle of tissue to which those organs belong . From the interior parts they proceed by finer and finer ramifications until they enter the hairs of many ...
... species . Sometimes they accompany the spiral vessels , forming a part of the bundle of tissue to which those organs belong . From the interior parts they proceed by finer and finer ramifications until they enter the hairs of many ...
Página 38
... species of tree producing it . Cavities of this nature are often called vasa propria . To this class also are to be referred the turpentine vessels of Grew ; the ré- servoirs accidentels of De Candolle ; and also the réservoirs en cæcum ...
... species of tree producing it . Cavities of this nature are often called vasa propria . To this class also are to be referred the turpentine vessels of Grew ; the ré- servoirs accidentels of De Candolle ; and also the réservoirs en cæcum ...
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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.