The Origin of Floral Structures Through Insect and Other AgenciesKegan Paul, Trench, Trübner & Company, Limited, 1888 - 349 pagini |
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Pagina xv
... corolla ... 10. Flower of Mimulus undergoing " dialysis " ... ... 11. Stamens of Centaurea , showing syngenesious anthers ; method of fertilisation by " piston - action " ( b ) , nectary and direc- tion of insect - proboscis , etc ...
... corolla ... 10. Flower of Mimulus undergoing " dialysis " ... ... 11. Stamens of Centaurea , showing syngenesious anthers ; method of fertilisation by " piston - action " ( b ) , nectary and direc- tion of insect - proboscis , etc ...
Pagina xviii
... Corolla , stamens , and style of Salvia clandestina , showing adaptations for self - fertilisation ... Corolla of Foxglove with filamentous processes , some being antheriferous ... ... 73. Aquilegia , the corolla with polleniferous spurs ...
... Corolla , stamens , and style of Salvia clandestina , showing adaptations for self - fertilisation ... Corolla of Foxglove with filamentous processes , some being antheriferous ... ... 73. Aquilegia , the corolla with polleniferous spurs ...
Pagina 3
... Corolla . The third stands for the Anthers of the five Stamens superposed to the sepals ; the fourth being those of five Stamens super- posed to the petals . These two whorls of stamens together constitute the Androecium . Lastly ...
... Corolla . The third stands for the Anthers of the five Stamens superposed to the sepals ; the fourth being those of five Stamens super- posed to the petals . These two whorls of stamens together constitute the Androecium . Lastly ...
Pagina 8
... corolla , the petals thereby abstract- ing the nourishment that would be required by the stamens superposed to them . That the number of staminal whorls should be two in verticillate flowers , i.e. , equal to the perianth , is apparent ...
... corolla , the petals thereby abstract- ing the nourishment that would be required by the stamens superposed to them . That the number of staminal whorls should be two in verticillate flowers , i.e. , equal to the perianth , is apparent ...
Pagina 9
... corolla may disappear entirely , as in Sagina apetala , some cleistogamous flowers , and in the Incompletæ gencrally . Such degradation is also characteristic of wind - fertilised flowers . As both calyx and corolla may be degraded and ...
... corolla may disappear entirely , as in Sagina apetala , some cleistogamous flowers , and in the Incompletæ gencrally . Such degradation is also characteristic of wind - fertilised flowers . As both calyx and corolla may be degraded and ...
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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