The Origin of Floral Structures Through Insect and Other AgenciesKegan Paul, Trench, Trübner & Company, Limited, 1888 - 349 pagini |
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Pagina 65
... the section . The outermost one of each group of three will form the dorsal cord of the carpel . The two inner have their vessels already turned F towards each other , as described in Hellebore , and THE PRINCIPLE OF COHESION . 65.
... the section . The outermost one of each group of three will form the dorsal cord of the carpel . The two inner have their vessels already turned F towards each other , as described in Hellebore , and THE PRINCIPLE OF COHESION . 65.
Pagina 66
... described by Van Tieghem in Geranium longipes , and with slight modifications it will apply to Pelargonium zonale . Each of the lateral cords divides into two ( Fig . 13 , b ) , the two interior and adjacent branches unite to form a ...
... described by Van Tieghem in Geranium longipes , and with slight modifications it will apply to Pelargonium zonale . Each of the lateral cords divides into two ( Fig . 13 , b ) , the two interior and adjacent branches unite to form a ...
Pagina 72
... described as axial ; but anatomical investigations do not warrant the conclusion . The commissural surfaces are obviously merely the result of rupture between the two carpels which have cohered ; and , in consequence of this union ...
... described as axial ; but anatomical investigations do not warrant the conclusion . The commissural surfaces are obviously merely the result of rupture between the two carpels which have cohered ; and , in consequence of this union ...
Pagina 78
... described as perigynous . On the other hand , if the stamens and pistil be in close con- junction , showing an adhesion between the filament and the style , so that the anther and stigma are brought together , the term gynandrous is ...
... described as perigynous . On the other hand , if the stamens and pistil be in close con- junction , showing an adhesion between the filament and the style , so that the anther and stigma are brought together , the term gynandrous is ...
Pagina 79
... , while the actual stamen is practically free * Traité Botanique , p . 390 . + This will be described more fully below ( see Fig . 28 , p . 95 ) . from the calyx , yet its cord is common with THE PRINCIPLE OF ADHESION . 79.
... , while the actual stamen is practically free * Traité Botanique , p . 390 . + This will be described more fully below ( see Fig . 28 , p . 95 ) . from the calyx , yet its cord is common with THE PRINCIPLE OF ADHESION . 79.
Alte ediții - Afișează-le pe toate
The Origin of Floral Structures Through Insect and Other Agencies George Henslow Vizualizare completă - 1893 |
The Origin of Floral Structures Through Insect and Other Agencies George Henslow Vizualizare completă - 1888 |
Termeni și expresii frecvente
adaptation to insect androecium anemophilous anthers appear arrested atrophy autogamy axial axis bear become bracts calyx capsules carpellary carpels cause cells character chorisis cleistogamous cleistogamous flowers colour condition corolla crossed Darwin degeneracy degradation Demy 8vo diclinism differentiated fact female flowers fertile fertilisation fibro-vascular cords filaments floral whorls florets foliaceous Forms of Flowers Fourth Edition genera genus grains hermaphrodite heterostyled hypertrophy Illustrations insect agency insects intercrossing irregular irritation Journ Labiata latter leaf leaves less long-styled form male flowers marginal mature Müller nature normally observed occur Orchids origin ovary ovules ovuliferous pedicel perianth petaline petals petioles phyllotaxis pistil placentas pollen pollen-tubes Primula produced protandrous protogynous Ranunculus receptacular tube regard remarkable result seedlings seeds seen self-fertilisation self-fertilised plants sepaline sepals short-styled form Small crown 8vo species spiral stamens stigmas structure style superposed temperature Teratology Third Edition tion tissue usually visited weight whorls
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