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Name: Baja
Baja California (Zone 11b)
Cactus and Succulents Seed Starter Foliage Fan Xeriscape Container Gardener Bromeliad
Hummingbirder Native Plants and Wildflowers Garden Photography Region: Mexico Plant Identifier
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Baja_Costero
Apr 11, 2016 11:44 AM CST
Anyone know what to call this tiny cactus? Sorry the picture quality is not the best.

Thumb of 2016-04-11/Baja_Costero/694449
Name: Thijs van Soest
Mesa, AZ (Zone 9b)
Adeniums Enjoys or suffers hot summers Cactus and Succulents Container Gardener Hummingbirder Xeriscape
Region: Arizona Region: Southwest Gardening Seed Starter Plant and/or Seed Trader Cat Lover Dog Lover
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mcvansoest
Apr 12, 2016 8:44 AM CST
Hi Baja,

I'd say a Mammillaria for sure, but after that I would need to do some digging. For now I can say compare to M. elongata, M. laui, and M. vetula and its supspecies. Not sure it is any of those but it shows similarities in some way to each. If you think it is not those I would have to start digging in the books I have, and I am not sure when I will have the time for that, busy work week, and my dad will be visiting from the Netherlands starting Thursday.
Name: Daisy
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Apr 12, 2016 10:34 AM CST
It looks like Mammillaria to me also but I have some questions.

I think there are tubercles under all those spines. If so, can you see the base of the tubercles? There should be a little spot or tuft or.. were the flowers are originating.

The flowers always grow on last years growth so generally in a ring around the top of each 'ball' in the cluster.

Are there hooks on the ends of any of those spines that you can feel when you slide you finger off the tip of a spine?

Is this growing wild?

Daisy
Name: Baja
Baja California (Zone 11b)
Cactus and Succulents Seed Starter Foliage Fan Xeriscape Container Gardener Bromeliad
Hummingbirder Native Plants and Wildflowers Garden Photography Region: Mexico Plant Identifier
Image
Baja_Costero
Apr 12, 2016 1:06 PM CST
Thank you both. I agree it is probably Mammillaria. There's no way to see through the spines to the body of the plant. No hooks. It is quite small (the rocks are pumice chunks in the range of a quarter to a half an inch). This plant was a gift from a traveler, bought at a nursery. I think probably not elongata just because of the size (and the ease of propagating that plant from cuttings). It's hard to know if it's just young or really small (maybe both) but given it's flowering, I would imagine the second. I will have to spend some time looking at the different Mammillarias to try to sort them all out.
[Last edited by Baja_Costero - Apr 12, 2016 1:12 PM (+)]
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Name: Daisy
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Apr 12, 2016 3:19 PM CST
Check out Mammillaria lasiacantha

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