The Origin of Floral Structures Through Insect and Other AgenciesKegan Paul, Trench, Trübner & Company, Limited, 1888 - 349 pagini |
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Pagina xvi
... ovule in Beta ... 223 ... 73 ... 75 17. Carpels of Acer , showing the thickened bases , preparatory for ... ... ... ovules 18. A separate carpel of Primula sinensis , with marginal ovules and a " heel - like " " process , the origin of ...
... ovule in Beta ... 223 ... 73 ... 75 17. Carpels of Acer , showing the thickened bases , preparatory for ... ... ... ovules 18. A separate carpel of Primula sinensis , with marginal ovules and a " heel - like " " process , the origin of ...
Pagina xviii
... ovules originating from a placenta of Carnation , ... ... the carpels again ovuliferous ( a ) 78. Stameniferous carpels of Willow and Ranunculus auricomus 296 79. Petaliferous placentas of Cardamine pratensis and of Rhodo- dendron ...
... ovules originating from a placenta of Carnation , ... ... the carpels again ovuliferous ( a ) 78. Stameniferous carpels of Willow and Ranunculus auricomus 296 79. Petaliferous placentas of Cardamine pratensis and of Rhodo- dendron ...
Pagina xix
... ovules of Mignonette ... PAGE 302 305 86. Metamorphosed and foliaceous ovules of Sisymbrium Alliaria 306 87. Tubular excrescence on the labellum of Cattleya , homologous with an ovule Primrose ... ... ... 88. Multifold carpels , with ...
... ovules of Mignonette ... PAGE 302 305 86. Metamorphosed and foliaceous ovules of Sisymbrium Alliaria 306 87. Tubular excrescence on the labellum of Cattleya , homologous with an ovule Primrose ... ... ... 88. Multifold carpels , with ...
Pagina 20
... ovules . The gynoecium has very frequently a less number of carpels than the other whorls have parts . Now , the primary effect of intercrossing is to enhance the size of the corolla and to give a preponderance to the androecium , On ...
... ovules . The gynoecium has very frequently a less number of carpels than the other whorls have parts . Now , the primary effect of intercrossing is to enhance the size of the corolla and to give a preponderance to the androecium , On ...
Pagina 63
... ovules attached at the base , as in Rumex , Compositæ , Gramineæ , etc. It is these latter kinds especially which have given rise to much discussion as to the real nature of the placentas , and as to how far the axis enters into their ...
... ovules attached at the base , as in Rumex , Compositæ , Gramineæ , etc. It is these latter kinds especially which have given rise to much discussion as to the real nature of the placentas , and as to how far the axis enters into their ...
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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Pagina 30 - II. Physics and Politics ; or, Thoughts on the Application of the Principles of "Natural Selection " and " Inheritance
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