New Cactis to ID

If you have a cactus plant and need help identifying it, this is the place to post it.
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clematis69
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New Cactis to ID

Post by clematis69 »

I don't know if this pictures are sufficient for the Id of this cacti, maybe I should post more pictures when the flowers are open. Anyway any help for the identification is welcome, thanks in advance.

1 -

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2 -

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3 -

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daiv
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Re: New Cactis to ID

Post by daiv »

Well the middle one is Cereus spegazzinii - crested form

The first and last are Gymnocalycium - I think mihanovichii and stellatum respectively.
All Cacti are succulents, but not all succulents are Cacti
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hob
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Re: New Cactis to ID

Post by hob »

2 Cereus spegazzinii crest?????
incurable cactoholic
growing rebutia's with a mix of others.
iann
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Re: New Cactis to ID

Post by iann »

I suspect the first is G. damsii (aka G. anisitsii). Post an open flower for confirmation.
--ian
luddhus
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Re: New Cactis to ID

Post by luddhus »

Gymnocalycium ragonesei for the last one?
clematis69
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Re: New Cactis to ID

Post by clematis69 »

Now nr. 3 has opened the flowers but my doubt is still if it's a Gymnocalycium ragonesei or a stellatum since the flowers are quite similar ? Anyone know the difference and can tell for sure wich it is ?
Personally I think it's more a ragonesei but I'll confide more on your advice.

Image

Image
iann
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Re: New Cactis to ID

Post by iann »

Body and spines look more like G. ragonesei. Flowers are similar on both species. G. stellatum tends to have a red eye, but I think some forms don't. I think G. occultum has flowers without red. They both come under G. quehlianum now so I don't know if my characterisation of the flowers is correct.
--ian
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Arjen
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Re: New Cactis to ID

Post by Arjen »

#1 depends on the flower colour, if it's greenish mihanovichii, if it's pinkish damsii, it looks very mihanovichii to me though
With apologies to the late Professor C. D. Darlington the following misquotation springs to
mind ‘cactus taxonomy is the pursuit of the impossible by the incompetent’ - Fearn & Pearcy, Rebutia (1981)
clematis69
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Re: New Cactis to ID

Post by clematis69 »

An this are the flowers of nr. 1

Image

looks a bit more pink than the picture.

What s it finally ?
iann
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Re: New Cactis to ID

Post by iann »

G. damsii, now lumped under G. anisitsii.
--ian
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Arjen
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Re: New Cactis to ID

Post by Arjen »

I agree
With apologies to the late Professor C. D. Darlington the following misquotation springs to
mind ‘cactus taxonomy is the pursuit of the impossible by the incompetent’ - Fearn & Pearcy, Rebutia (1981)
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