[Taxacom] [HERBARIA] Fruit geotropism?

[Piero Delprete]

Hello,

The first thing that came to mind is several cleistogamic species of Viola.

There is an interesting, historical review article, that you might  
already know:

Rawitscher, F. 1937. Geotropism in plants. Botanical Review 3(3): 175-194.

Regards,

Piero

-- 
Piero Delprete Email: piero.delprete at ird.fr - Institut de Recherche pour le
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Quoting Pierre Deleporte <pierre.deleporte at univ-rennes1.fr>:

>
> 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
>>
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>
> --
> Pierre Deleporte
> Université de Rennes 1
> CNRS UMR6552 Ethologie Animale et Humaine
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