File:Bulletin de la Société botanique de Genève (1918) (14581524078).jpg

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Identifier: bulletindelasoci21012191820soci (find matches)
Title: Bulletin de la Société botanique de Genève
Year: 1909 (1900s)
Authors: Société botanique de Genève
Subjects: Botany Botany
Publisher: Genève, (Switzerland) : Société botanique de Genève
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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hytecaractérisé. Il y a lieu cependant de ne pas confondre ces fines rami-fications avec les rhizomorphes qui, en réseau, se répandent dans tousles sens. Il y a aussi lieu de noter que les hyphes dun mycète (fig. 246) accom-pagnent ces fines radicelles à la façon dun champignon de mycorhizeet qui souvent enveloppent dun réseau ténu les délicates ramifications.On pourrait évidemment se poser ce problème de savoir si ces hyphesnaccompagnent ces radicelles quà la façon dun demi-parasite quitrouve dans les excréta ou les gouttelettes de latex une nourriturequi lui convient, ou sil faut y voir un mycète qui vit en une symbioseencore mal définie avec la racine du Ficus. Quoiquil en soit, la racinepar son écorce qui, en papilles ou en poils, sapplique étroitementcontre les cellules de lhôte pénètre les éléments sclérifiés du péri-derme qui sont attaqués, rongés, comme lest un grain damidon danslalbumen dune céréale par la diastase que sécrète le scutellum, le
Text Appearing After Image:
Fig. 245. — Ficus jeune (Ficus guaranidca) qui a germé sur la fourche dunEnterolobium ; la plantule a formé un hypocotyle napiforme, une racinecharnue qui descend dans le périderme pourri et qui se ramifie dans lestissus ramollis en plongeant dans ces derniers ses ramuscules suçoirsassocies à des mycorrhizes. On a détaché la surface crevassée du péridermepour mettre à nu ce système radiculaire du saprophyte. Dessin de R. C. daprès une photographie. 2i6 BULLETIN DE LA SOCIETE BOTANIQUE DE GENEVE (36)

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https://www.flickr.com/photos/internetarchivebookimages/14581524078/

Author Société botanique de Genève
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Volume
InfoField
1918
Flickr tags
InfoField
  • bookid:bulletindelasoci21012191820soci
  • bookyear:1909
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:Soci__t___botanique_de_Gen__ve
  • booksubject:Botany
  • bookpublisher:Gen__ve___Switzerland____Soci__t___botanique_de_Gen__ve
  • bookcontributor:Smithsonian_Libraries
  • booksponsor:Smithsonian_Libraries
  • bookleafnumber:656
  • bookcollection:biodiversity
  • bookcollection:americana
  • BHL Collection
  • BHL Consortium
Flickr posted date
InfoField
28 July 2014



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