The Origin of Floral Structures Through Insect and Other AgenciesKegan Paul, Trench, Trübner & Company, Limited, 1888 - 349 pagini |
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Pagina xvi
... arrest 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 ...
... arrest 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 ...
Pagina 4
... be regarded as a shortened form of Gynæcæcium . I do not here allude to certain glandular structures , which may be the homologues of arrested organs . different whorls , as well as of those of the 4 THE STRUCTURE OF FLOWERS .
... be regarded as a shortened form of Gynæcæcium . I do not here allude to certain glandular structures , which may be the homologues of arrested organs . different whorls , as well as of those of the 4 THE STRUCTURE OF FLOWERS .
Pagina 6
... arrested state of the axis of the former , constituting the floral receptacle ; and the question arises , how has this arrest been brought about ? Like all other peculiarities of structure to be described , I would attribute the arrest ...
... arrested state of the axis of the former , constituting the floral receptacle ; and the question arises , how has this arrest been brought about ? Like all other peculiarities of structure to be described , I would attribute the arrest ...
Pagina 7
... arrested , and then it may be either one ; but most usually it is the petaline . On the other hand , the calycine may not be developed as in Primroses , Rhamnus , etc. The absence of the petaline stamens is possibly attribu- table to ...
... arrested , and then it may be either one ; but most usually it is the petaline . On the other hand , the calycine may not be developed as in Primroses , Rhamnus , etc. The absence of the petaline stamens is possibly attribu- table to ...
Pagina 8
... arrested and remain rudimentary , or even not to be developed at all . This is particularly observable in some epigynous orders as Umbelliferæ , Araliaceæ , Capri- foliacea , Rubiacea , Compositæ , etc. The degradation of the corolla is ...
... arrested and remain rudimentary , or even not to be developed at all . This is particularly observable in some epigynous orders as Umbelliferæ , Araliaceæ , Capri- foliacea , Rubiacea , Compositæ , etc. The degradation of the corolla is ...
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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