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 Mammillaria spinosissima or Mammillaria meyrani ?

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Joseph

Joseph

Number of posts : 99
Age : 60
Location : The Netherlands
Registration date : 2013-11-21

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PostSubject: Mammillaria spinosissima or Mammillaria meyrani ?   Mammillaria spinosissima  or Mammillaria meyrani  ? Icon_minitimeMon Feb 03, 2014 6:20 pm

Hi cactus friends.
This afternoon I surprised with 2 cacti, of someone who has been to Ikea.
Do you have a suggestion how these 2 cacti are called?Mammillaria spinosissima Mammillaria meyrani or Is it???
PS. picture 1 and 1A are the same cacti.
Thanks for your effort.
Joseph
Mammillaria spinosissima  or Mammillaria meyrani  ? Onbeke10
Mammillaria spinosissima  or Mammillaria meyrani  ? Onbeke11
Mammillaria spinosissima  or Mammillaria meyrani  ? Onbeke12
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mmartic



Number of posts : 85
Location : Serbia
Registration date : 2013-05-21

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PostSubject: Re: Mammillaria spinosissima or Mammillaria meyrani ?   Mammillaria spinosissima  or Mammillaria meyrani  ? Icon_minitimeTue Feb 04, 2014 6:55 am

I think second plant (on 2 pictures) is Bombycina... Both of them need more sun and less nutrients and water...
Be careful with introducing to sun in the begining Smile
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Joseph

Joseph

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PostSubject: Re: Mammillaria spinosissima or Mammillaria meyrani ?   Mammillaria spinosissima  or Mammillaria meyrani  ? Icon_minitimeTue Feb 04, 2014 8:24 am

Goodmorning MMartic,
It would be a good link for a Bombycina!
But the variation is very large in this. Has this Bombycina a subname ? or should I wait for the flowers? I think the 1st picture is a spinnossima species..?
Have a nice day,
Greetings Joseph.
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delandmo



Number of posts : 281
Age : 73
Location : Sutton, Surrey.
Registration date : 2011-06-05

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PostSubject: Re: Mammillaria spinosissima or Mammillaria meyrani ?   Mammillaria spinosissima  or Mammillaria meyrani  ? Icon_minitimeTue Feb 04, 2014 2:30 pm

No.1 is most likely m. meyranii and No.2 is m.Bombycina, no other subspecies name . Both plants appear to be growing in a peaty or coir based compost, used by plant nurseries to promote quick growth, that is why plant No.1 looks bloated. I would change the compost asap. Could lead to an attack of sciara fly and very difficult to re-wet if allowed to dry out.
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Joseph

Joseph

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Age : 60
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PostSubject: Re: Mammillaria spinosissima or Mammillaria meyrani ?   Mammillaria spinosissima  or Mammillaria meyrani  ? Icon_minitimeTue Feb 04, 2014 3:13 pm

Goodafternoon Delandmo,
Thank you so much for your good advice!
For both cacti is the ground already been replaced by original cactus soil.
Nice day!
Joseph.
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Joseph

Joseph

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PostSubject: Re: Mammillaria spinosissima or Mammillaria meyrani ?   Mammillaria spinosissima  or Mammillaria meyrani  ? Icon_minitimeWed Feb 05, 2014 8:41 pm

Dear friends, I recently received this email from a friend:
Hi Joseph, is not up to you, I don't find much on google.
While in the in the photo encyclopedia, the meyranii has clearly hated thorns!!
But in the book by Backeberg is no crochet thorns mentioned!!
The picture in my book has field number Reppenhage 968.
The flowers will provide the answer!!
Greetings B.

So best friends, I understand any anymore, so like your help!
ITEM IS PHOTO nr.1
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delandmo



Number of posts : 281
Age : 73
Location : Sutton, Surrey.
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PostSubject: Re: Mammillaria spinosissima or Mammillaria meyrani ?   Mammillaria spinosissima  or Mammillaria meyrani  ? Icon_minitimeWed Feb 05, 2014 11:59 pm

Hi,
Rep 968 is m, meyranii, and your plant No1 appears to have two central spines. one pointing upwards and one pointing downwards, which is what is expected in m. meyranii. No hooked spines! Your photo does show some hooked spines when looking carefully. Another plant that could possibly be yours with hooked spines, but would call for a least 4 central spines (3 upper and 1 lower and longer) and in the same series of the polyacanthae is m. duoformis complex, maybe synonym m. hamata.
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Chris43
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Chris43

Number of posts : 1714
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PostSubject: Re: Mammillaria spinosissima or Mammillaria meyrani ?   Mammillaria spinosissima  or Mammillaria meyrani  ? Icon_minitimeSat Feb 08, 2014 3:26 pm

If I may butt in here. I think that trying to identify a plant from Ikea is not easy. It is probable that it is grown in a huge nursery, with seed that is of uncertain origin, and more than likely of hybrid origin.

M. meyranii is not a common species, and I would doubt that Ikea would buy such a plant - or rather that a nursery would produce plants in such numbers as to satisfy Ikea demand. It is much more likely that it is of the duoformis type.

In the Polyacanthae series, species have been described which have straight spines and others with hooked spines. The reality is that hooked spines are a variable feature. Just look at M. rekoi to see how variable the hooked central spine is.

If you really want to know what species a plant is, you need to know where it comes from, which means a field number and a reliable grower.

I would label the first plant as M. sp. Nunezii Group.

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