ID please...

Blackshear, GA

Can someone tell me the name of this cactus? Also, how much bigger will it get? It is presently approx. 3 ft. or so.

Thumbnail by GAgirl1066
Valley of the Sun, AZ(Zone 9b)

It looks like a Pilosocereus pachycladus which can get up to over 30 feet high after many, many years if grown in the ground.
If I could see the spines more clearly, I could be more sure of which species of Pilosocereus it is.
Link: http://davesgarden.com/guides/pf/go/510/

Blackshear, GA

Hi Xeno,
Thanks for your help....wow 30 ft. Here are some closeups

The top of it..

Thumbnail by GAgirl1066
Blackshear, GA

and the spines

Thumbnail by GAgirl1066
Blackshear, GA

What about this one? Any idea?

Thumbnail by GAgirl1066
Blackshear, GA

close up

Thumbnail by GAgirl1066
Blackshear, GA

sorry, that's not very clear, but on the back plant..notice the little leaf(?) emerging.

Valley of the Sun, AZ(Zone 9b)

Nope, the spines are not the same as Pilosocereus pachycladus, neither are the ribs, so that's not it.
I'll keep looking for it though. The closeups tell me that it's highly likely to be a Cereus sp.

The second plant is a Euphorbia sp.
Someone here will know which one it is.

This message was edited Sep 8, 2011 12:29 PM

Valley of the Sun, AZ(Zone 9b)

Notice the two spines that are pointing upwardly from the rest of spines? That's an identifying feature of this one. I looked at over 100 spine closeups and the only one I found that has those two spines pointing upward is Cereus fernambucensis. Also notice the the areolae have a small amount of wool which is also on C. fernambucensis. The only thing that dosen't look quite identical is the thickness of the branch(s) which could be either the enviromental conditions or you have a slightly different forma.
Cereus species tend to have many formas within the genus. So in my assessment, that's what it is.
Here are some other photos to compare and see the spines and wool, etc.
http://davesgarden.com/guides/pf/showimage/56258/

On this page you can see that the stems *do* get thicker like yours. And you can also see the growth habit.
http://www.ceapdesign.com.br/familias_botanicas/cactaceae.html

Perth, United Kingdom(Zone 7b)

I trawled through cactiguide.com & columnar cacti.com & couldn't find anything to match. I thought maybe Neocardenasia but the spines weren't a close match.
The three upward pointing spines on GAgirls picture are very difficult to match to anything

Valley of the Sun, AZ(Zone 9b)

I looked through the 2 Cereus albums, the 5 Pilosocereus albums & the Heliabravoa album on this link here: http://community.webshots.com/user/brcacti
There are many more albums of genera at that link.

Valley of the Sun, AZ(Zone 9b)

I see what you mean about Neocardinasia, check out this photo here:
http://home-and-garden.webshots.com/photo/1434088775075508785TSPFeK

Perth, United Kingdom(Zone 7b)

Really miss Stake for this kind of cactus ID, he was really good with columnar cacti needing ID

Perth, United Kingdom(Zone 7b)

Its definitely got a Cereus look to it though, most other columnar cacti have more ribs

Blackshear, GA

It's blooming, so maybe that can help narrow it down. I'll try to get one with it open.

Thumbnail by GAgirl1066 Thumbnail by GAgirl1066
Valley of the Sun, AZ(Zone 9b)

Did you have any luck getting a photo with the flower open?
It should open at night and close a couple/few hours after sunrise. It's a night bloomer.

Blackshear, GA

No, and the other one bloomed before I could.

Norwalk, IA(Zone 5b)

Might be a hybrid seedling of two types?

Post a Reply to this Thread

You cannot post until you , sign up and subscribe. to post.
BACK TO TOP