An Introduction to BotanyLongman, Orme, Brown, Green, and Longmans, 1839 - 594 páginas |
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Página 19
... body , which he regards as a universal elementary organ , and calls Cytoblast . + According to this observer , the form varies from oval to lenticular and round , the colour from yellowish to a silvery white , and changing to pale ...
... body , which he regards as a universal elementary organ , and calls Cytoblast . + According to this observer , the form varies from oval to lenticular and round , the colour from yellowish to a silvery white , and changing to pale ...
Página 20
... body is formed earlier than the Cytoblast itself . It is sometimes darker , sometimes clearer than the rest of the Cytoblast ; and is usually of a firmer consistence , remaining well defined when the latter is crushed by pressure into ...
... body is formed earlier than the Cytoblast itself . It is sometimes darker , sometimes clearer than the rest of the Cytoblast ; and is usually of a firmer consistence , remaining well defined when the latter is crushed by pressure into ...
Página 66
... body ) ; l , a compound red gland from Ailanthus glandulosa ; m , oblong stalked glands from Begonia platanifolia they resemble drops of resin , or something of that sort . Other modifications of glandular apparatus are what some ...
... body ) ; l , a compound red gland from Ailanthus glandulosa ; m , oblong stalked glands from Begonia platanifolia they resemble drops of resin , or something of that sort . Other modifications of glandular apparatus are what some ...
Página 69
... body called an embryo , with two opposite extremities , of which the one lengthens in the direction of the earth's centre , and the other , taking a direction exactly the contrary , extends upwards into the air . This disposition to ...
... body called an embryo , with two opposite extremities , of which the one lengthens in the direction of the earth's centre , and the other , taking a direction exactly the contrary , extends upwards into the air . This disposition to ...
Página 76
... a bulb ; a scaly body , formed at or beneath the surface of the ground , emitting roots from its base , and pro- ducing a stem from its centre . Linnæus considered it the leaf - bud of a root ; but in this 76 BOOK I. ORGANOGRAPHY .
... a bulb ; a scaly body , formed at or beneath the surface of the ground , emitting roots from its base , and pro- ducing a stem from its centre . Linnæus considered it the leaf - bud of a root ; but in this 76 BOOK I. ORGANOGRAPHY .
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Palavras e frases frequentes
Adolphe Brongniart anther apex appears arranged axis bark base become bladders body botanists bracts branches buds bundles called calyx Candolle carbonic acid carpels cause cavity cells cellular tissue centre character colour colourless common compound considered consists corolla cotyledons cyclosis cyme dehiscence developement direction disk dissepiments distinct Dutrochet elongated embryo Endogens epidermis exist Exogens external extremity fibres fleshy flowers fluid fruit glands grains granules green growing hairs inflorescence integument kind layers leaf leaflets leaves Linnæus lobes margin matter medullary rays membrane midrib Mirbel modifications Mohl monocotyledons nature nucleus observations organs ovary ovule oxygen parenchyma peculiar pericarp petals petiole pistil pith placenta plants Plate pollen pollen tube produced quantity radicle remarkable roots round seeds separate side sometimes species spiral vessels stamens stem stigma stomates structure substance surface term terminal tion tree tube valves vascular vegetable veins wood woody tissue yellow