The Origin of Floral Structures Through Insect and Other AgenciesKegan Paul, Trench, Trübner & Company, Limited, 1888 - 349 pagini |
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Pagina xvi
... pistil , the receptacular tube represented by a rod - like pedicel . Two anthers are deve- loped instead of one ( a ) 24. Receptacular tube of Rose , bearing a leaf and a stipular sepal 25. Vertical section of the receptacular tube of ...
... pistil , the receptacular tube represented by a rod - like pedicel . Two anthers are deve- loped instead of one ( a ) 24. Receptacular tube of Rose , bearing a leaf and a stipular sepal 25. Vertical section of the receptacular tube of ...
Pagina 2
... Pistil et sur l'Anatomée Comparée de la Fleur ( 1871 ) , dealing with the more minute details of floral struc- tures . This treatise , however , still leaves much to be desired . Besides these methods , analogy and especially teratology ...
... Pistil et sur l'Anatomée Comparée de la Fleur ( 1871 ) , dealing with the more minute details of floral struc- tures . This treatise , however , still leaves much to be desired . Besides these methods , analogy and especially teratology ...
Pagina 4
... Pistil . The outermost whorl of carpels is superposed to the sepals , the innermost to the petals . There may be additional structures in flowers , such as disks , honey - glands , etc .; but as these , when they occur on the floral ...
... Pistil . The outermost whorl of carpels is superposed to the sepals , the innermost to the petals . There may be additional structures in flowers , such as disks , honey - glands , etc .; but as these , when they occur on the floral ...
Pagina 33
... pistil being about the only " capparidaceous " feature left . It is not at all uncommon to find more than six stamens in cultivated plants of the Cruciferæ , and when this is the case I should be inclined to regard it as a tendency to a ...
... pistil being about the only " capparidaceous " feature left . It is not at all uncommon to find more than six stamens in cultivated plants of the Cruciferæ , and when this is the case I should be inclined to regard it as a tendency to a ...
Pagina 38
... barren ones of Calycanthus are here reduced to five ; so that , omitting the pistil , the flower con- sists of four distinct pentamerous whorls . CHAPTER IV . THE PRINCIPLE OF ARRANGEMENT . 18. 15.20 38 THE STRUCTURE OF FLOWERS .
... barren ones of Calycanthus are here reduced to five ; so that , omitting the pistil , the flower con- sists of four distinct pentamerous whorls . CHAPTER IV . THE PRINCIPLE OF ARRANGEMENT . 18. 15.20 38 THE STRUCTURE OF FLOWERS .
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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