mystery Aylostera (Rebutia, Mediolobivia)

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Paul D
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mystery Aylostera (Rebutia, Mediolobivia)

Post by Paul D »

Now that the new greenhouse is up I'm going through each plant, sorting and tidying. I have a bit of a puzzle.

This is quite an old plant, from seed sown in 1990. It has an old label saying "Rebutia cintiensis MG1192.4". This is a Mesa Garden number, but this seed is no longer listed. Clearly the plant is not Aylostera (Rebutia) cintiensis, so I wonder if the number was wrongly noted; the species name was wrongly noted; or the label is from a different plant!
Can anyone hazard an identification for this plant?

[edit] I think a good candidate would be A. rutiliflora.

And I know it's a long shot- but does anyone have a plant grown from Mesa Garden 1192.4 seed?

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Re: mystery Aylostera (Rebutia, Mediolobivia)

Post by KarlR »

I had a look at the oldest SB list I've stored (1999). It doesn't have a 1192.4, but there are two Rebutia cintiensis on the list. Their numbers are 1192.46 and 1192.5. The first comes with the field nr R321and description: Tarija, flat stem, vertical sharp spines. The second comes with the field nr R503A and description: bright orange flowers.

Both are Walter Rausch numbers. You might be able to find more info on them in Ralph Martin's field number database (http://www.fieldnos.bcss.org.uk/fieldno.html).

I'm not at home so I can't check if Pilbeam has anything to say on this species in his Rebutia book.
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Paul D
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Re: mystery Aylostera (Rebutia, Mediolobivia)

Post by Paul D »

Thanks Karl. My plant is most definitely not cintiensis- it is a Mediolobivia subgenus rather than Aylostera, which cintiensis is. I'm fairly sure that the plant is Aylostera (Rebutia) pygmaea var. (ssp.?) rutiliflora, or variations thereof. Does SB list rutiliflora or pygmaea anywhere near 1192?
KarlR wrote: Tue Aug 21, 2018 3:16 pm I had a look at the oldest SB list I've stored (1999). It doesn't have a 1192.4, but there are two Rebutia cintiensis on the list. Their numbers are 1192.46 and 1192.5. The first comes with the field nr R321and description: Tarija, flat stem, vertical sharp spines. The second comes with the field nr R503A and description: bright orange flowers.

Both are Walter Rausch numbers. You might be able to find more info on them in Ralph Martin's field number database (http://www.fieldnos.bcss.org.uk/fieldno.html).

I'm not at home so I can't check if Pilbeam has anything to say on this species in his Rebutia book.
Paul in North-east Scotland (Grampian Branch BCSS)
National Collection Rebutia, Aylostera & Weingartia (inc. Sulcorebutia). Also growing a mixture including Ferocactus, Gymnocalycium, Lobivia, Mammillaria, Lithops, Gasteria, Haworthia.
http://www.rebutia.org.uk
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Re: mystery Aylostera (Rebutia, Mediolobivia)

Post by KarlR »

I agree it's not cintiensis. I can't really say rutiliflora is a good match either, though I have never grown that form. Isn't it a form of diersiana, or very similar to it?

What about haagei or haagei/pygmaea var. crassa?

I couldn't find anything in the Mesa Garden lists which could easily have been mixed up with 1192.4 and which matches your plant. Could very well be a mix-up by Steven Brack or a stray seed or similar.
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Re: mystery Aylostera (Rebutia, Mediolobivia)

Post by Phil_SK »

Not in my '93 list either. :(
Phil Crewe, BCSS 38143. Mostly S. American cacti, esp. Lobivia, Sulcorebutia and little Opuntia
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Re: mystery Aylostera (Rebutia, Mediolobivia)

Post by ralphrmartin »

Clearly not cintiensis, an Aylostera.

But I don't think its rutiliflora either, as that has yellow flowers, and very white spines and areoles - see picture.

R. pygmaea v. crassa is a much fatter plant, as its name suggests.

I dont have a particular suggestion. Plants going round as haagei or orurensis vary a lot, so its hard to know what those names really mean, but it's not exactly the same as any of those I have, either.
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