I've had this cactus a long time, didn't quite realize that it was as long ago as 97 until I looked up when the eiffel tower was built in Vegas. I went to Vegas with my sister and her family and one of the places that we visited was Ethel M candy, and I picked up a small pot with various cacti in it (which all promptly died with the exception of this one). I feel bad that during the entire time of growing plants I have never given this one much love. Finally this year I decided to repot it from it's original pot (shameful , I know) which was 6" x 2 1/4" pot because it had started leaning and I thought maybe the roots needed some depth. Anyways I tried to look it up, but it seems different than any other one I've seen . I was thinking Prickly Pear, but they seem to be wider. Just to give any other info that may be pertinent, I live in WA in an apartment so it's only gotten north facing light for at least the last 16 years and I do put it outside during the summer when the temps get to be in the 70's. The deck doesn't usually get more than 20 minutes of direct sunlight though, so perhaps it's skinny because it's lacking full sunlight.
Any help with an certain ID or other suggestions would be appreciated, as most of my plant experience are foliage types... dracenas, snake plants, lipstick and for some reason the other cactus/succulents i've had didn't fair so well (jade & xmas cactus).
Cheers
