The Origin of Floral Structures Through Insect and Other AgenciesKegan Paul, Trench, Trübner & Company, Limited, 1888 - 349 pagini |
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Pagina 4
... occur on the floral - receptacle , are merely cellular protuberances and form no part of the floral whorls proper - not being foliar in their origin - they may be omitted , especially as their posi- tion is by no means constantly the ...
... occur on the floral - receptacle , are merely cellular protuberances and form no part of the floral whorls proper - not being foliar in their origin - they may be omitted , especially as their posi- tion is by no means constantly the ...
Pagina 5
... occur , and then the process is called " dialysis ; " as in the case of a polypetalous Campanula occasionally cultivated as a garden plant . 66 Adhesion " signifies the union of parts of different whorls ; as well as that between the ...
... occur , and then the process is called " dialysis ; " as in the case of a polypetalous Campanula occasionally cultivated as a garden plant . 66 Adhesion " signifies the union of parts of different whorls ; as well as that between the ...
Pagina 9
... occur in species of Potamogeton , in which alternate internodes between the distichously arranged leaves are suppressed , so that they become opposite , but are all in the same plane . leaves in a " cycle , " and the numerator THE ...
... occur in species of Potamogeton , in which alternate internodes between the distichously arranged leaves are suppressed , so that they become opposite , but are all in the same plane . leaves in a " cycle , " and the numerator THE ...
Pagina 12
... occur in the row 1 , 6 , 9 , etc. , a fact which corresponds with the rarity of a ternary arrangement occurring amongst flowers of Dicotyledons , but in order to fall over No. 1 it would have to pass through 270 ° , that is from right ...
... occur in the row 1 , 6 , 9 , etc. , a fact which corresponds with the rarity of a ternary arrangement occurring amongst flowers of Dicotyledons , but in order to fall over No. 1 it would have to pass through 270 ° , that is from right ...
Pagina 15
... occur , as 144 3 b Fig . 3. - Floral Estivations . d in Berberis , there are special features which lead one to believe they are not due to the type at all , but to the breaking up of a high continuous spiral into groups of threes , as ...
... occur , as 144 3 b Fig . 3. - Floral Estivations . d in Berberis , there are special features which lead one to believe they are not due to the type at all , but to the breaking up of a high continuous spiral into groups of threes , as ...
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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