Cactus species not in cultivation...

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Richard1933
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Cactus species not in cultivation...

Post by Richard1933 » Sun May 12, 2019 8:15 am

Hello, I am currently re-reading A Cactus Odyssey by Mauseth, Kiesling and Ostolaza. Whilst in Bolivia they come across Samaipaticereus corroanus which even today seems to be relatively rare in cultivation. Are there any other such species which have been discovered/cataloged and known of but have yet to reach cultivation? Or are there any species which are popular within collections but have not been re-discovered/re-collected in habitat for quite some time and thus would warrant tracking down again?
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KathyM
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Re: Cactus species not in cultivation...

Post by KathyM » Sun May 12, 2019 7:35 pm

The peanut cactus, Echinopsis chamaecereus, is one that is very widely grown but has never been found in habitat again I believe.
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Re: Cactus species not in cultivation...

Post by ralphrmartin » Sun May 12, 2019 7:50 pm

Yes, plenty of both kinds!

For example, as far as I am aware, there's just one clone of Aylostera (was Rebutia) albiflora in cultivation.

And there are many of Ritter's plants described in his 4 volume Kakteen in Sudamerika which don't seem to be in cultivation now, if they ever were.
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Re: Cactus species not in cultivation...

Post by ralphrmartin » Sun May 12, 2019 7:52 pm

KathyM wrote:
Sun May 12, 2019 7:35 pm
The peanut cactus, Echinopsis chamaecereus, is one that is very widely grown but has never been found in habitat again I believe.
I have a form which was supposed to have been collected in the wild by Dieter Herzog in the Sierra Calchique - although Graham Charles poo-poos it and says he thinks it is a hybrid. The flower is pretty similar to the cultivated form, but the body is a little fatter / darker spined / longer spined.

Does anyone else here know anything about that plant?
Ralph Martin
https://www.rrm.me.uk/Cacti/cacti.html
Members visiting the Llyn Peninsula are welcome to visit my collection.

Swaps and sales at https://www.rrm.me.uk/Cacti/forsale.php

My Field Number Database is at http://www.fieldnos.bcss.org.uk
Richard1933
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Re: Cactus species not in cultivation...

Post by Richard1933 » Sun May 12, 2019 8:55 pm

Yes, i had considered Ritter's work to contain many such species but without a direct paper translated copy not that easy to trawl though and translate through google, but a project when i have some more time for sure. Do you know where R. Albiflora was supposedly collected from?
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Re: Cactus species not in cultivation...

Post by Phil_SK » Mon May 13, 2019 6:23 am

ralphrmartin wrote:
Sun May 12, 2019 7:52 pm
I have a form which was supposed to have been collected in the wild by Dieter Herzog in the Sierra Calchique - although Graham Charles poo-poos it and says he thinks it is a hybrid. The flower is pretty similar to the cultivated form, but the body is a little fatter / darker spined / longer spined.

Does anyone else here know anything about that plant?
Have a look at Infobrief 2000-29 FE.pdf on https://cactuspro.com/biblio/en:echinopseen
Phil Crewe, BCSS 38143. Mostly S. American cacti, esp. Lobivia, Sulcorebutia and little Opuntia
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Re: Cactus species not in cultivation...

Post by Herts Mike » Mon May 13, 2019 7:57 am

Does anybody have Arrojadoa marylanae?
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Re: Cactus species not in cultivation...

Post by Terry S. » Mon May 13, 2019 8:27 am

It is a popularity issue. Nearly all fairly small globular cacti are in cultivation. However many of the tall cerei and particularly opuntias are not in cultivation in the UK, although they might be used for xeriscaping in warmer countries. Graham Charles when he gives talks has a cactus category BLIH - best left in habitat.
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Re: Cactus species not in cultivation...

Post by Richard1933 » Mon May 13, 2019 10:25 am

Terry - What would be a good example of BLIH?
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Re: Cactus species not in cultivation...

Post by kohinoor » Mon May 13, 2019 12:10 pm

Herts Mike wrote:
Mon May 13, 2019 7:57 am
Does anybody have Arrojadoa marylanae?
just acquire these two from my friend.
Apparently there are someone selling these seed.

Image
From taiwan. hot humid subtropical island.
Pachypodium grow like weed here.
(not really, but u get the idea hot sunny rainy)
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