[Taxacom] [HERBARIA] Fruit geotropism?

[Pierre Deleporte]

Hi,

for what I can see (right out there),
Cymbalaria muralis seems to be scototropic (pushing into dark places) 
rather than "geotropic" (pushing down ?)
this is how the population climbs up the walls (the plant spreads around 
in all directions, notably upward, and inserts seeds into closest 
cracks)...
of course, on flat surfaces (gravelled area out there) all the dark 
places are "down"

by contrast, Newton's apple was a clearly geotropic fruit 

Pierre
(non-botanist)



Veldkamp, J.F. (Jan Frits) a écrit :
> Dear Lena,
>
> Cyclamen spp.
> Cymbalaria muralis
> Cucumis humifructus (but some reports say the aardvarks take the fruits
> to their burrows), etc.
>
> Van der Pijl, L. 1982. Principles of dispersal in higher plants, ed. 3:
> 94, gives refrences to about 30 species falling into seven types (Still
> a gold mine of information!). Since then no dounbt more have been added.
> Hope this helps, 
>
> JeF
>
> -----Original Message-----
> From: herbaria-bounces at nacse.org [mailto:herbaria-bounces at nacse.org] On
> Behalf Of Lena Struwe
> Sent: Friday, October 02, 2009 3:12 AM
> To: herbaria at nacse.org
> Subject: [HERBARIA] Fruit geotropism?
>
> Hi,
>
> We have a new species that shows fruit geotropism (pushing the once
> erect fruit into the soil) and I am looking for other examples for this
> in the plant kingdom.  So far, we have only found Arachis (peanuts), the
> obvious one, but there must be other species that show this too, right?
>
> Any suggestions?  Thanks in advance, and you can respond off-list if you
> like. Best wishes,
>
> Lena
>
> --
> *************************************
> Dr. Lena Struwe
> Associate Professor
> Dept. of Ecology, Evolution, & Natural Resources/ Dept. of Plant Biology
> & Pathology Rutgers University
> 237 Foran Hall, 59 Dudley Road
> New Brunswick, NJ 08901-8551, USA
> phone: (732) 932-9711 ext. 235, fax: (732) 932-9441
> e-mail: struwe at aesop.rutgers.edu  
> home page: www.rci.rutgers.edu/~struwe    
> GENTIAN RESEARCH NETWORK: http://gentian.rutgers.edu Director, CHRYSLER
> HERBARIUM: http://herbarium.rutgers.edu
>
> _______________________________________________
> HERBARIA mailing list
> HERBARIA at NACSE.ORG
> https://www.NACSE.ORG/mailman/listinfo/herbaria
>
> _______________________________________________
>
> Taxacom Mailing List
> Taxacom at mailman.nhm.ku.edu
> http://mailman.nhm.ku.edu/mailman/listinfo/taxacom
>
> The Taxacom archive going back to 1992 may be searched with either of these methods:
>
> (1) http://taxacom.markmail.org
>
> Or (2) a Google search specified as:  site:mailman.nhm.ku.edu/pipermail/taxacom  your search terms here
>   

-- 
Pierre Deleporte
Université de Rennes 1
CNRS UMR6552 Ethologie Animale et Humaine 
Station Biologique de Paimpont
F-35380 Paimpont   FRANCE
Téléphone : 02 99 61 81 63
Télécopie : 02 99 61 81 88 

L'UMR6552 EST UN LABORATOIRE EN LUTTE 
UMR6552 IS A STRUGGLING LABORATORY