The Origin of Floral Structures Through Insect and Other AgenciesKegan Paul, Trench, Trübner & Company, Limited, 1888 - 349 pagini |
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Pagina 2
... example ; and the most elaborate result of this method of investigation is undoubtedly Payer's Traité d'Organogénie Com- parée de la Fleur , published in 1857 : but if it be thought sufficient to limit the study of flowers to tracing ...
... example ; and the most elaborate result of this method of investigation is undoubtedly Payer's Traité d'Organogénie Com- parée de la Fleur , published in 1857 : but if it be thought sufficient to limit the study of flowers to tracing ...
Pagina 5
... example , they are in a Buttercup . Reversions to this con- dition of freedom may occur , and then the process is called " dialysis ; " as in the case of a polypetalous Campanula occasionally cultivated as a garden plant . 66 Adhesion ...
... example , they are in a Buttercup . Reversions to this con- dition of freedom may occur , and then the process is called " dialysis ; " as in the case of a polypetalous Campanula occasionally cultivated as a garden plant . 66 Adhesion ...
Pagina 12
... Examples , however , will be found in the leaves of Sedum reflexum , on some branches of Araucaria imbricata , and sometimes in the Jerusalem Artichoke . In the last case , it will be discovered that the heptastichous or type arises out ...
... Examples , however , will be found in the leaves of Sedum reflexum , on some branches of Araucaria imbricata , and sometimes in the Jerusalem Artichoke . In the last case , it will be discovered that the heptastichous or type arises out ...
Pagina 13
... example , a quaternary floral type may be , and often is , associated with alternate leaves ; where there is reason to suspect that the former was established from a primitive opposition in the leaf organs , but that the foliage has ...
... example , a quaternary floral type may be , and often is , associated with alternate leaves ; where there is reason to suspect that the former was established from a primitive opposition in the leaf organs , but that the foliage has ...
Pagina 25
... examples of particular numbers occurring in flowers , and attempt to account for them . ONE - MEMBERED WHORLS . - Where one part to a whorl is only found , it may in nearly every case be regarded as a degradation from some higher number ...
... examples of particular numbers occurring in flowers , and attempt to account for them . ONE - MEMBERED WHORLS . - Where one part to a whorl is only found , it may in nearly every case be regarded as a degradation from some higher number ...
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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