Orchid cactus? or Cereus? Help?

Jacksonville, FL(Zone 9a)

Hi, I have what I have always believed to be an Orchid cactus. Epiphyllum oxypetalum. ( 1st picture)
I received some cuttings from a friend, and told it was Cereus. ( 2nd picture)
After looking through some of the threads here, and looking at Plant files, I'm not sure what the cuttings are that I received. I'd love to get some of your opinions.
Thanks for looking. :-)

Thumbnail by tlm1 Thumbnail by tlm1
Jacksonville, FL(Zone 9a)

Anyone have any ideas?

Duluth, GA(Zone 7b)

Hey Tim, the first picture you posted looks like a regular epie to me, the second with the cuttings may be the oxy. The oxy tends to have wider, flatter leaves. I've had both, this is my 3rd year with them, and I'm looking forward to seeing some blooms.

Jacksonville, FL(Zone 9a)

Thanks, Cem9165, I think you led me in the right direction! It appears that my cutting IS the E. oxypetalum, and my older one, is actually a Disocactus ackermannii….. So pleased to get them straight! Thank you!

Santa Ana, CA(Zone 10b)

I have read that there is controversy as to the correct name of Epi. Oxypetalum actually being Cereus. In my world, Night blooming Cereus is a huge, upright, desert cactus, also called Queen of the Night, but I'm not a botanist, so what do I know? I'm thinking it all boils down to using common names, as opposed to Latin names. Both are "Queen of the night", both have nocturnal, white, fragrant flowers, but Epi. Oxy. is an epiphitic cactus, and the Cereus is an upright desert cactus....at least in my world.

Duluth, GA(Zone 7b)

You're welcome tim1, glad I could help. Please share your blooms when you get some.

OC, thanks for the explanation. Does it also include Hylocereus undatus?

Santa Ana, CA(Zone 10b)

Cem, I have no idea about Hylocereus. I was only researching Epi. Oxy.! LOL!

Greensburg, PA

Please take a look at this site. There are many nice pics of plants related to the first picture on this thread.

http://www.cristoalmeria.com/epifitos2010/hola_amigos.htm

Disocactus is definitely in the running, but there are varieous kinds of "*cereus" that also might be the case. Flowers should tell the tale.

Jacksonville, FL(Zone 9a)

Thank you ever so much…The link tells me the tale for sure…My Disocactus is definitely the ackermannii.. I've had this plant for several years, a cutting received from an Aunt years ago….The blooms are an identical match! I'm now anxiously waiting for these new cuttings of the E.oxypetalum to mature enough to bloom! I will surely post pictures when they bloom! Thanks again to all of you!

Santa Ana, CA(Zone 10b)

Thanks for the link, Krowten! Good thing I don't have room to "collect"!

Greensburg, PA

Glad to be of help. I do so wish I had a greenhouse!

Santa Ana, CA(Zone 10b)

Those would require a LARGE greenhouse.

Greensburg, PA

Just one of them as nice as those would make me proud.

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