The Origin of Floral Structures Through Insect and Other AgenciesKegan Paul, Trench, Trübner & Company, Limited, 1888 - 349 pagini |
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Pagina xvii
... Base of flower of Amaryllis , showing the honey - protector 42. Adhesive epidermal cells of roots of Orchids 43. Stipules of Impatiens , showing nectariferous tissue 44. Petals passing into nectariferous stamens of Atragene 45. Cells of ...
... Base of flower of Amaryllis , showing the honey - protector 42. Adhesive epidermal cells of roots of Orchids 43. Stipules of Impatiens , showing nectariferous tissue 44. Petals passing into nectariferous stamens of Atragene 45. Cells of ...
Pagina 43
... base of the superior sepal , it sends off an inner- most and lowest cord to become the dorsal one of the carpel ( d . car . ) , which , in this flower , is thus super- posed to a sepal . It also sends off two , right and left , one for ...
... base of the superior sepal , it sends off an inner- most and lowest cord to become the dorsal one of the carpel ( d . car . ) , which , in this flower , is thus super- posed to a sepal . It also sends off two , right and left , one for ...
Pagina 56
... base of the calyx - tube to about half - way up . Melissa has a very narrow elongated calyx , which fits the slender tube of the corolla exactly , and has 13 or 14 ribs . * Similarly Nepeta Cataria and N. Glechoma support the contracted ...
... base of the calyx - tube to about half - way up . Melissa has a very narrow elongated calyx , which fits the slender tube of the corolla exactly , and has 13 or 14 ribs . * Similarly Nepeta Cataria and N. Glechoma support the contracted ...
Pagina 57
... base , as in Linum usitatissimum , to a short distance from the anthers , as in Malvaceae and Leguminosa . It is undoubtedly an adaptation to insect agency . If the stamens be monadelphous , and the union be THE PRINCIPLE OF COHESION . 57.
... base , as in Linum usitatissimum , to a short distance from the anthers , as in Malvaceae and Leguminosa . It is undoubtedly an adaptation to insect agency . If the stamens be monadelphous , and the union be THE PRINCIPLE OF COHESION . 57.
Pagina 58
... base . In Cercis , the disk is very large , and the 10 stamens stand in depressions around it . Consequently they are entirely free . The staminal tube , together with the petals , which are more or less interlocked together , protect ...
... base . In Cercis , the disk is very large , and the 10 stamens stand in depressions around it . Consequently they are entirely free . The staminal tube , together with the petals , which are more or less interlocked together , protect ...
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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