austrocylindropuntia subulata monstrosa ? (two cacti)

[Snasal]

Hi

I have two cacti. With a lot of googling I found that they maybe both are austrocylindropuntia subulata monstrosa?

I'm really new at this identification thing, so I was wondering if I'm right? And why is it possible that they look so different? Is it because of different ages maybe? Or am I just so wrong?

The first one, I really think is a austrocylindropuntia subulata monstrosa:

austrocylindropuntia subulata f monstrosa 2-min.JPG (40.74 KiB) Viewed 638 times

But this second one, I'm really not sure of:

austrocylindropuntia subulata f monstrosa 1-min.JPG (93.96 KiB) Viewed 638 times

Already thanks for the effort!!

[teo]

First looks correct - the second looks like an Euphorbia

[DaveW]

In the first one the new joints are etiolating and need more light. They should be pretty well as thick as the stems below.

As Teo says the second is not a cactus but a Euphorbia, one of the Old World (usually African) "Other Succulents".

http://www.succulents.us/euphorbia.html

[Snasal]

Okay, thanks a lot!!!

I've put the first one in a better spot, where it will get more light!