A relative to the NBC - I'd say one of the seemingly innumerable Epi hybrids. Again, if you're on FB, contact Chuck Everson - he's an Epi man through and through. If I recall correctly, if it's colourful (not white), it will be day-blooming (white's for moths and bats and other nocturnal pollinators).

Yes, this one surprised me, I saw it in the afternoon and came back and took this pic the next morning. I didn't expect it to still be open and looking so good. I'll check out Chuck Everson. He may be able to ID the other one I asked about, too. Thanks.

Night blooming cereus is a cactus- this is a succulent. It looks like some variety of Easter cactus (not a cactus) to me.

Both pics that I posted are cacti. This is an epiphytic cactus, meaning it grows in trees. Easter Cactus and other similar ones really are cacti, and they are also epiphytic. This one is, like cactusmcharris said, an Epidendrum hybrid. These leaves are about 2-3 feet long, and the bloom is about 6" across.

You mean Epiphyllum, not Epidendrum. Epidendrum is an orchid. There are desert cacti and there are tropical cacti that grow in higher humidity with lower light levels. Epiphyllum is a tropical cactus.

Oh, you're right, I sure didn't mean Epidendrum! Thanks! I know the difference, and have a reed stemmed Epidendrum.

Wow, you learn something new every day. I had always been told the Easter and Christmas cacti were not cacti at all, and what I know as night-blooming cereus is a completely different cactus, similar to the Peruvian apple. Thanks for the education! It is a beautiful flower, I hope it lasted more than a day!

Leslie, there's so much to learn about cacti!! Any of the ones like the Easter Cactus, etc. and the epiphyllums, with those long, flat leaves, are true cacti. They need a lot more water than the cacti you usually see, and need more shade, because they live in trees in tropical areas. You can see the spines along the leaves sometimes, but they may not have any. Here's a close-up pic of the other one that needs an ID, you see the white dots on the leaf edges? That's where the spines are, or were. You can see some spines, especially along the bottom of the leaf. The tiny white spots are glochids, little bitty hairy spines, and only cacti have those.

I looked up Peruvian Apple, didn't know it by that name. It is a columnar cereus, and there are a lot of species. I have one in my yard, and it blooms at night. I think you can call any of the columnar cereus "night blooming cereus" because they bloom at night. The bloom on my friend's epiphyllum has lasted several days! He gave me a cutting, but it's pretty dried out. I really want one of those.