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 rhodantha? polythele?

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tistou



Number of posts : 3
Registration date : 2009-11-23

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PostSubject: rhodantha? polythele?   rhodantha? polythele? Icon_minitimeMon Nov 23, 2009 10:20 pm

Hello,

I'm new here. I'm living in France where I grow cactius and succulents on a balcony. They grow outside all over the year and I protect them from the rain.
For my first post, I need your help to identify this MAMMILLARIA:

rhodantha? polythele? Dscn0400n

Thanks for your help.

Tistou :-)
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Tam

Tam

Number of posts : 416
Location : Rothesay, Isle of Bute, Scotland
Registration date : 2008-11-12

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PostSubject: Re: rhodantha? polythele?   rhodantha? polythele? Icon_minitimeTue Nov 24, 2009 8:12 am

Hi Tistou,

Welcome to the forum. I believe this plant is M.rhodantha. The spine colour in this species tends to vary from golden - yellow has in the wonderful Rog 630 form to the more common red - brown has in your plant above.
M.polythele tends to have more darker gray - black spines, althought I do have a nice red - brown form of M ssp obconella.

Tam.
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tistou



Number of posts : 3
Registration date : 2009-11-23

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PostSubject: Re: rhodantha? polythele?   rhodantha? polythele? Icon_minitimeSat Nov 28, 2009 8:41 am

Thanks for welcome. A friend af mine gave me this plant with rhodantha name, but I think it's a polythele?

rhodantha? polythele? Dscn0416[/url]

This one is polythele?

rhodantha? polythele? Dscn0407z
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Thanks.

Tistou :-)
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Chris43
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Chris43

Number of posts : 1718
Age : 76
Location : Chinnor, UK
Registration date : 2008-07-16

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PostSubject: Re: rhodantha? polythele?   rhodantha? polythele? Icon_minitimeSat Nov 28, 2009 10:35 am

Hi,
The easiest way of telling whether a plant belongs to the polythele group or the rhodantha group is to look at the radial spines. Plants of the polythele group don't have any, or if they do they soon vanish.
The plants in your photo all have radial spines, even on older areoles, so I think they all would be rhodantha group plants, if they are "pure" species, or maybe hybrids.

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tistou



Number of posts : 3
Registration date : 2009-11-23

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PostSubject: Re: rhodantha? polythele?   rhodantha? polythele? Icon_minitimeSun Dec 13, 2009 7:37 pm

So it would be all rhodantha (or hybrids).
Thank you for your help.

Tistou :-)
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