An Introduction to BotanyLongman, Orme, Brown, Green, and Longmans, 1839 - 594 páginas |
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Página viii
... science as it is all that is generally acknowledged must pass current from author to author . " * London , May , 1839 . * Brett's Principles of Astronomy , p . v . - CONTENTS . 9 13 222 23 995 Stamens Pollen Disk viii PREFACE .
... science as it is all that is generally acknowledged must pass current from author to author . " * London , May , 1839 . * Brett's Principles of Astronomy , p . v . - CONTENTS . 9 13 222 23 995 Stamens Pollen Disk viii PREFACE .
Página ix
John Lindley. CONTENTS . 9 13 222 23 995 Stamens Pollen Disk Pistil Receptacle Ovule Fruit INTRODUCTION ΤΟ BOTANY . BOOK I. ORGANOGRAPHY ; OR ,. BOOK I. — ORGANOGRAPHY . - CHAP . I. Elementary Organs Consist of Membrane Fibre · · SECT . I ...
John Lindley. CONTENTS . 9 13 222 23 995 Stamens Pollen Disk Pistil Receptacle Ovule Fruit INTRODUCTION ΤΟ BOTANY . BOOK I. ORGANOGRAPHY ; OR ,. BOOK I. — ORGANOGRAPHY . - CHAP . I. Elementary Organs Consist of Membrane Fibre · · SECT . I ...
Página 12
... pollen grains . It appears that in Confervæ the increase in number of the cells takes place by the internal division of the parent cells . In Conferva glomerata the last joint is always as long as those below it , only rather more ...
... pollen grains . It appears that in Confervæ the increase in number of the cells takes place by the internal division of the parent cells . In Conferva glomerata the last joint is always as long as those below it , only rather more ...
Página 19
... pollen tube of Linum pallescens . In structure it is usually granular ; in consistence it varies between extreme softness and such a degree of toughness , as enables it to resist the pressure of the compressorium without altering its ...
... pollen tube of Linum pallescens . In structure it is usually granular ; in consistence it varies between extreme softness and such a degree of toughness , as enables it to resist the pressure of the compressorium without altering its ...
Página 20
... Cytoblast appears , however , sometimes to have a permanent existence , as in the pollen of Larix europæa , and in those hairs in which a circulation of the sap is observable . In those Schleiden has remarked 20 BOOK I. ORGANOGRAPHY .
... Cytoblast appears , however , sometimes to have a permanent existence , as in the pollen of Larix europæa , and in those hairs in which a circulation of the sap is observable . In those Schleiden has remarked 20 BOOK I. ORGANOGRAPHY .
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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.