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 Mammillaria luethyi

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stekeltje
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PostSubject: Mammillaria luethyi   Wed Jul 23, 2008 10:29 pm

Mammillaria luethyi

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Hugo

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PostSubject: Re: Mammillaria luethyi   Wed Jul 23, 2008 10:30 pm

Hello Sonja,
This is a prize winner, stunning flowers!!! Is it on own roots or grafted ?

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PostSubject: Re: Mammillaria luethyi   Wed Jul 23, 2008 10:31 pm

My grafted M. luethyi:

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PostSubject: Re: Mammillaria luethyi   Wed Jul 23, 2008 10:32 pm

Grafted or not, still one of the most beautiful Mammillaria flowers.

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PostSubject: Re: Mammillaria luethyi   Wed Jul 23, 2008 10:35 pm

I'll join in the display - you can just see the plant - on its roots, single headed.


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PostSubject: Re: Mammillaria luethyi   Mon Apr 25, 2011 5:49 pm

Today and yesterday a seed-grown luethyi was in full flower (one head, on its own roots). I have a few more grafted luethyis as well as another seed-grown one, but they are not yet flowering.
I really like the stunning flowers of this species. Also added are a few macros of the tubercles, showing the 'spination' on each tubercle.

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PostSubject: Re: Mammillaria luethyi   Mon Apr 25, 2011 6:20 pm

Great macro shots, Wolter. Those really are the most unusual spine clusters!
And well, the flowers.......

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PostSubject: Re: Mammillaria luethyi   Mon May 30, 2011 3:46 pm

Sorry to say this, but in the second macro shot, it appears there are Red Spidermites on the tubercle! I know they are supposed to be susceptible to spidermite attacks too.
Hey, does anyone know if they are self fertile or not? I just ordered a grafted plant and am expecting it by weeks end.
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PostSubject: Re: Mammillaria luethyi   Mon May 30, 2011 9:08 pm

I doubt that the small reddish dots have anything to do with spider mites. The plants still look very healthy, no sign of spider mite damage. The tubercles are only 1.5 - 2 mm in diameter, which would make the small reddish dots about 0.05 mm, which I believe is much too small for spider mites.
The macro shots of the areoles were taken with a Canon MP-E 65 mm lens, which can enlarge up to 5 times. Details like the spine-like structure of the areoles, which are not visible with the naked eye, will become visible with this lens. However, sharpness of depth is very, very small.

As far as I know, M. luethyi is not self-fertile, but perhaps there are exceptions. Two exceptions in my greenhouse: One plant of M. zephyrantoides is self-fertile, just like a M. saboae roczekii. The latter one was grafted on a piece of Opuntia. A roczekii on its own roots was not self-fertile. The Opuntia-grafted plant died a winter ago, but from the seeds I got some nice small seedlings (it looks as if roczekii germinates better than the others of the saboae group or M. luethyi).

Wolter.
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PostSubject: Re: Mammillaria luethyi   Mon May 30, 2011 9:27 pm

Very nice Wolter!

I agree with your marks on the germination of roczekii; in general I have good germination with seeds of this ssp.

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PostSubject: Re: Mammillaria luethyi   Tue May 31, 2011 3:53 pm

That's Great Wolter, It would really be bad to lose the plant. Very nice flowers too btw.

And I'll keep my fingers crossed I can find pollen for my plant if and when it blooms.

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