An ID, please.

FRANCKM · Post by **FRANCKM** » Sun Mar 28, 2010 11:36 am

Hello,

I'd like to have some advices about this cacti, and find out its name. Possible in ground in Z8?

Thx
Franck

These are the pics. Sorry I just forgot it this morning when posting..
It's gonna be easier right now.

Franck

FRANCKM · Post by **FRANCKM** » Sun Mar 28, 2010 3:16 pm

Any idea ?

Mercedes · Post by **Mercedes** » Sun Mar 28, 2010 3:53 pm

Hello, can it be Echinopsis terscheckii? I has got one look like.
Mercedes

FRANCKM · Post by **FRANCKM** » Sun Mar 28, 2010 9:25 pm

Thank you Mercedes.

Franck

christos · Post by **christos** » Sun Mar 28, 2010 9:31 pm

Franck, I have the same plant and I had also problem about it's ID.

It would be either Trichocereus atacamensis ssp. pasacana or Trichocereus terschekii.
The nursery owner said it is the first but the yellow spines makes me lean towards terschekii.
I'm not absolutely sure ,though, because there are many hybrids of this genus sold and there is also the usuall problem with columnar cacti. It's too young to tell...

Terschekii is a good bet though, so thumbs up for Mercedes choise!

A very usefull guide for ID Trichocereus species is this:
http://www.lycaeum.org/leda/docs/16084.shtml?ID=16084

As you can see, you often have to wait for the flower, the fruit or ...the seed to distinguish Trichocereus species!

FRANCKM · Post by **FRANCKM** » Sun Mar 28, 2010 9:45 pm

Yes indeed, I knew that the two species were very closely related. Thanks to you to Christos.

By the way, what's about that one ?

Cacti77 · Post by **Cacti77** » Sun Mar 28, 2010 10:41 pm

FRANCKM wrote:Yes indeed, I knew that the two species were very closely related. Thanks to you to Christos.

By the way, what's about that one ?

Cereus forbesii?

See the pic in the upper right side of this page, I believe it is called something else now but its a start.

http://www.columnar-cacti.org/cereus/

king_hedes · Post by **king_hedes** » Mon Mar 29, 2010 3:05 am

cool spines on it

Peterthecactusguy · Post by **Peterthecactusguy** » Mon Mar 29, 2010 3:09 am

Matt yup they are a neat black color!

Post by **daiv** » Mon Mar 29, 2010 4:56 pm

Not sure if either would handle your climate. At least you could experiment with one of the pups off the first one. If it dies, you still have the others.

Mladen_DJ · Post by **Mladen_DJ** » Mon Mar 29, 2010 5:35 pm

Cacti77 wrote:
FRANCKM wrote:Yes indeed, I knew that the two species were very closely related. Thanks to you to Christos.

By the way, what's about that one ?
Cereus forbesii?

See the pic in the upper right side of this page, I believe it is called something else now but its a start.

http://www.columnar-cacti.org/cereus/

Googled a lot, and I found closest match for this guy (which is pretty close, except basal spines colour, but I believe it's climate factor) Cereus validus aka C. forbesii

this is one of the things that's confusing me a lot. If it is Cereus forbesii (C. validus), how it is posible, that I found this

also tagged as Cereus forbesii (C. validus). OK they are close, but also, there are lots of differences among them? Maybe I'm ignorant

, but theese two are different on the first sight (ribs, spines, alveoles, wool production and so on). Is it possible there is so much variations inside one specimen? And if it is, why there are no defined varieties?

FRANCKM · Post by **FRANCKM** » Mon Mar 29, 2010 8:43 pm

I just... don't know

Lots of pics seen on the web are not correctly tagged. Moreover, it may be a variation from the type, or more complicated an hybrid

Anyway, I don't expect a great hardiness from mine.

I'll tell you the verdict in one year!

Thanks for your replies..

Franck

Mercedes · Post by **Mercedes** » Tue Mar 30, 2010 5:58 pm

Hi,
Mladen_DJ, you third photo it is Cereus forbesii, your are right, but the second photo, I would say it is Trichocereus pachanoi. Maybe I say nonsense.

Mercedes

Mladen_DJ · Post by **Mladen_DJ** » Tue Mar 30, 2010 10:28 pm

Mercedes wrote:Hi,
Mladen_DJ, you third photo it is Cereus forbesii, your are right, but the second photo, I would say it is Trichocereus pachanoi. Maybe I say nonsense.
Mercedes

Thank you for your sugestion Mercedes...I have no idea, I found lots of pictures which match my cacty on 3rd photo very close, and they are tagged as C. forbesii.

Same time Trichocereus pachanoi match shape of my cactus, but has less and shorter spines if I'm not wrong.

Hope one day flower will solve mistery.

peterb · Post by **peterb** » Tue Mar 30, 2010 11:42 pm

That blue columnar with black spines is a good looking plant! It does look different from Cereus forbesii, though. Is it maybe Cereus aethiops?

peterb