Ariocarpus ID

[PhiloCacti]

Bought these yesterday, but the seller didn't know their species

Ariocarpus lloydii
http://www.cactus-art.biz/schede/ARIOCA ... loydii.htm" onclick="window.open(this.href);return false;

_20150822_074638.JPG (40.65 KiB) Viewed 1029 times

Ariocarpus retusus var. furfuraceus
http://www.cactus-art.biz/schede/ARIOCA ... raceus.htm" onclick="window.open(this.href);return false;

_20150822_074700.JPG (35.61 KiB) Viewed 1029 times

These 2 look like Ariocarpus retusus var. pectinatus
http://www.cactus-art.biz/schede/ARIOCA ... inatus.htm" onclick="window.open(this.href);return false;

_20150822_074614.JPG (37.35 KiB) Viewed 1029 times

_20150822_074556.JPG (41.4 KiB) Viewed 1029 times

Any feedback would be appreciated.... Thanks in advance.

[gemhunter178]

All of these look like some form of retusus: the cactus-art page for Ariocarpus fissuratus var. lloydii seems to have 2 retusi and possibly an actual lloydii (lower left picture) Here's what mine looks like:

Ariocarpus fissuratus var. lloydii

DSC_0598 (2)_1.jpg (117.24 KiB) Viewed 1023 times

As for the specific retusus names you've mentioned, for you to judge:
v. furfuraceus is usually like a grayish green, and has equilateral triangle-shaped tubercles. Mine:

Ariocarpus retusus v. furfuraceus

DSC_0597 (2)_1.jpg (93.26 KiB) Viewed 1023 times

v. pectinatus has to have these spines at the tip of the tubercle (all of mine are still seedlings)
Maybe some version of v. scapharostroides for that last one? Remember that retusus is a highly variable species.

[DaveW]

Ariocarpus retusus v. pectinatus has a linear areole with pectinate spines running down the centre of most tubercles, but some tubercles are devoid of them, or the line is interrupted as the link below shows, which inclines me to think it should be regarded as simply a monstrose form rather than a genuine botanical variety?

http://www.cactus-art.biz/schede/ARIOCA ... inatus.htm" onclick="window.open(this.href);return false;

Or probably just a selected cultivar like this one:-

http://www.llifle.com/Encyclopedia/CACT ... auliflower" onclick="window.open(this.href);return false;

[PhiloCacti]

Thanks a lot for the help guys

All of these look like some form of retusus: the cactus-art page for Ariocarpus fissuratus var. lloydii seems to have 2 retusi and possibly an actual lloydii (lower left picture) Here's what mine looks like:

DSC_0598 (2)_1.jpg

As for the specific retusus names you've mentioned, for you to judge:
v. furfuraceus is usually like a grayish green, and has equilateral triangle-shaped tubercles. Mine:

DSC_0597 (2)_1.jpg

v. pectinatus has to have these spines at the tip of the tubercle (all of mine are still seedlings)
Maybe some version of v. scapharostroides for that last one? Remember that retusus is a highly variable species.

Thanks a lot for the pics, they made it very helpful. The one I thought furfuraceus was cuz it looked like a retusus with some wrinkles in it, but I didn't know that it supposed to have this greyish color

The one I thought lloydiicould be a cross between fissurates and retusus, who knows.
I see what you mean by the variability of the retusus species, makes it a little confusing for noobies like me.

Yeah, the last 2 could easily be scapharostrus as you suggested.
Are they any specific "keys" to help ID ariocarpus specimen ?

Ariocarpus retusus v. pectinatus has a linear areole with pectinate spines running down the centre of most tubercles, but some tubercles are devoid of them, or the line is interrupted as the link below shows, which inclines me to think it should be regarded as simply a monstrose form rather than a genuine botanical variety?

http://www.cactus-art.biz/schede/ARIOCA ... inatus.htm" onclick="window.open(this.href);return false;

Or probably just a selected cultivar like this one:-

http://www.llifle.com/Encyclopedia/CACT ... auliflower" onclick="window.open(this.href);return false;

My bad. I thought I read that younger specimens lack this pectinated areoles but as I re read the cactus-art page, it states the opposite.


I'll update once they flower.