which Echinopsis?

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palmbob Acton, CA(Zone 8b) Feb 05, 2015

Got these unnamed… thought they were E terscheckiis… but now wondering if they could be pacasanas.

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DaisyPlantLady Reno, NV(Zone 6b) Feb 05, 2015

There's more than one kind in your photo. Are you asking about the two tall ones in front? I believe they are not the same species. If I had to guess, I would say the spinier one is a Trichocereus.

Beautiful cactus garden, from what I can see.

Daisy

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palmbob Acton, CA(Zone 8b) Feb 06, 2015

Trichocereus is Echinopsis now. I was told they were the same in the past, though their spination is a bit more intense in one than the other. I have no clue what the one in the back is... no one has been able to key that one out.

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DaisyPlantLady Reno, NV(Zone 6b) Feb 06, 2015

Show us more of the plant in the back - now I'm curious. I will continue to think about the other two. Still going with different species though.

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mcvansoest Mesa, AZ(Zone 9b) Feb 06, 2015

I think the one on the left is E. terscheckii looks just like mine looks from approximately the same distance. Any chance of a close-up of the spines?

How about E. chiloensis for the one on the right? I only have small ones of that one, but the spinage sort of matches again from a distance.

I have been trying to get my hands on a pacasana for ages, not been successful. I have one plant that came unlabeled, that I am keeping my fingers crossed could be a candidate, also looks like the plant on the right, but it has slightly different spinage compared to the chiloensis, which you need a closeup for to distinguish.

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palmbob Acton, CA(Zone 8b) Feb 10, 2015

Here are some close ups

Thumbnail by palmbob Thumbnail by palmbob Thumbnail by palmbob Thumbnail by palmbob
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mcvansoest Mesa, AZ(Zone 9b) Feb 11, 2015

Hi palmbob,

I think based on the close-ups that the 1st plant is E. terscheckii, see the attached picture, which was a positively ID'd E. terscheckii when I got it.

I can see why people would say those Cacti are the same - spinage looks close in some ways to the other plant, but to me they look different. 2nd plant has too many ribs for its size, and I think the spines are different enough.
I do not have a positive ID for the 2nd plant. From the close-ups it looks even more similar to my unknown E. specimen that I was hoping might be E. pasacana, but I simply do not know for sure and my plant is a lot smaller - and sorry I have no good picture to post at the moment. Will try to change that at some point.

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