Ten years ago, I received a cactus as gift. At the time, it consisted of
a single "stalk" about 2 inches tall and about 1 inch in diameter. It was
green and totally covered with spines (in groups). The spines were about
..25-inch in length. When I received the cactus in early April, it had 2
white flowers that were slightly longer than the spines. The cactus
continued to flower for a few weeks, and produced about 11 flowers in all.
Over the summer, I left the cactus unattended near a sunny window in a
very hot room. When I returned after 4 weeks, the cactus had doubled in
height (although the diameter remained the same). During the next few
months, the cactus continued to grow at an amazing rate and developed
numerous arms. Over a ten-year period, it grew roughly 30 arms. Indeed,
many of the arms grew multiple arms. However, the once-erect cactus is
now bent over. The center stalk grew thinner towards the end and began to
lean about 8 or 9 years ago. The total length of the cactus (from soil to
tip of most extreme arm) is about 8 inches. Sadly, despite my best
efforts, I have never been able to get it to flower again. Nonetheless,
it remains a beautiful plant, and I've enjoyed having and caring for it
over the years. My question is: what type of cactus is it? If my
description doesn't help, I'll be happy to send someone an image. Sorry
to ramble. Your help is appreciated.

June