Ariocarpus retusus types

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C And D
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Ariocarpus retusus types

Post by C And D »

I know there are at least 2 types of Ariocarpus retusus
The first one I remember, Ariocarpus retusus furfuraceus

I don't remember the second one's name, I think it starts with an R

Ariocarpus retusus furfuraceus
has triangular tubercles, like below
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The other type has more rounded tubercles
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These fat tubercles ones may be hybrids of sorts
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I grew this one from seed
It's called "Blue Boy"
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Any thoughts?
Check out our plant and seed lists
http://www.CandDplants.com

Craig and Denise Fry
keith
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Re: Ariocarpus retusus types

Post by keith »

Any thoughts? ' Miles Anderson has half a dozen different named ones on his web site for sale. But they seem to sell out within days.

Probably widespread over Mexico and that's the story behind the different forms. The retusus i have bought from Miles have shorter fatter tubercles and the ones I have bought from Mesa have longer narrower tubercles. All reluctant flowerer's for me.
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Two different retusus
Two different retusus
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Last edited by keith on Sat Oct 01, 2022 2:20 am, edited 1 time in total.
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Steve Johnson
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Re: Ariocarpus retusus types

Post by Steve Johnson »

keith wrote: Fri Sep 30, 2022 10:34 pm Any thoughts? ' Miles Anderson has half a dozen different named ones on his web site for sale. But they seem to sell out within days.

Probably widespread over Mexico and that's the story behind the different forms. The retusus i have bought from Miles have shorter fatter tubercles and the ones I have bought from Mesa have longer narrower tubercles. All reluctant flowerer's for me.
I wonder if that's true for Ariocarpus in general, at least here in SoCal. I have an Ario fissuratus I got from CoronaCactus in 2013 -- first flower November 2014, and it flowers every other year. If the Ario stays true to form, it'll bloom in about 6 weeks.
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My location: Los Angeles, CA (Zone 10b)
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Hanazono
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Re: Ariocarpus retusus types

Post by Hanazono »

I have kept several types of ariocarpus retusus including cultivars.

Photo 1: standard retusus
Photo 2: retusus v furfuraceus
Photo 3: retusus v furfuraceus cv Daruma seiji
Photo 4; retusus v furfuraceus cv Suguri cauliflower
Photo 5: retusus v furfuraceus cv Daruma Royal
Photo 6: retusus f major cv Shinkawa
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DaveW
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Re: Ariocarpus retusus types

Post by DaveW »

I think we have to distinguish between artificially bred cultivars and natural variation in the wild. A. retusus seems to have a wide distribution so you can expect quite a degree of variation in the populations. Also do you consider these variations as species, subspecies, varieties or merely forms of A. retusus?

In the past if a plant was collected at both ends of its distribution by different collectors, they appeared distinct and were called separate species. As time went on other collectors collected plants intermediate between the two extremes and then the question arises do, we then treat them as distinct or just general variation within a species?

https://hscactus.org/resources/plants-o ... vironments.

I have an Ariocarpus intermedius flowering at the moment, this is simply an intermediate form in the cline running from A. fissuratus with heavily grooved tubercles to A. lloydii with smooth ones. Do we treat them all as separate species or just natural variations of A. fissuratus?

Personally, I think there is enough variation of plants in the wild without creating variants artificially in cultivation, but the hybridists will disagree.
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Re: Ariocarpus retusus types

Post by DaveW »

A handy site for identifying Ariocarpus species is "Living Rocks of Mexico" with clickable links for the speci3es.

http://www.living-rocks.com/species.htm
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