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Re: Epiphyllums/Off topic

  • Subject: Re: Epiphyllums/Off topic
  • From: <ju-bo@msn.com>
  • Date: Thu, 1 May 2008 09:59:15 +0000

> Date: Tue, 29 Apr 2008 18:48:12 -0700
> From: leo@possi.org
> To: aroid-l@gizmoworks.com
> Subject: Re: [Aroid-l] Epiphyllums

Dear Friends,

I am NOT a Cactus person, but will add my two cents to this mix.
It appears that this ''debate'' is now centered around the narrow determination of the difference between a ''rain forest'' and a ''tropical deciduous forest".   Being from Trinidad, and having traveled in Fr. Guyana, I can assure all that tree-growing Cacti I am familiar with, in most cases do NOT make a distinction, and that they do not suddenly stop growing or existing in what the experts consider ''true rain forests''.   I have seen climbing epiphitic Cacti high in the wet canopy, who knows what genera they may be determined to belong to once they are collected, and Taxonomists get their hands on them.   If, as it is being said, the range of the Cactus genus Epiphyllum is from Southern Mexico, all of Central America, and all down the Western side of S. America, I can assure all that in many of these areas, especially in Panama and W. Colombia, W. Bolivia and W. Brazil there are REAL rain forests with Cacti growing in them, I don`t know how many species and of what genera 
 they may be!
The discussion also got turned around, as it was Steve who was ''warning'' that the cacti in question would NOT tollerate a freeze, the other guy twisted this around to say that Steve had written that they WOULD take low temps./freezes.
My two cents.

Julius Boos
 Steve wrote
> > There is one individual on that site who keeps insisting Epiphyllum
> > species are not a rain forest plant.  Virtually everything I've been able
> > to find and read indicates they are just that and are found from Southern
> > Mexico, all of Central America, and in South America through Venezuela,
> > the Guiana Shield, and all down the western side of the continent through
> > Bolivia as well as in Brazil.  I just can't figure out how an epiphytic
> > plant that populates that region of the world could not be a rain forest
> > species!
> Steve - They aren't rain forest plants. I've seen some of them in Mexico.
> There are indeed cacti that are rain forest plants but Epiphyllum in
> general aren't, with the possible exception of E. chrysocardium.
> They are denizens of tropical deciduous forest. In other words, 4 months
> of summer rain, 8 months of no rain (but with normal nighttime dew.) Most
> (not all) of Mexico has this climate regime. I haven't been to Central
> America but there's plenty of tropical deciduous forest there too.
> The epi hybrids involve lots of other genera. The few species remaining in
> Epiphyllum have nocturnal white flowers. The other colors in hybrids come
> from other genera. The species may take a tiny amount of frost but almost
> all the hybrids are extremely tender.
> Hardier plants with flowers similar to Epiphyllum are some of the
> Selenicereus species. They are vining epiphytes that are what was
> originally meant by "Queen of the Night Cactus."
> Leo Martin
> Phoenix Arizona USA
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