Looks like a young Monstera deliciosa. If the mature leaves begin to split, you'll know for sure.

Josh

From your pic, it looks like the petioles don't have genicula. Do you agree?

Pic with helpful labels: http://exoticrainforest.com/A-watermaliense-geniculum-w.gif

If you do agree that the petioles don't have genicula, it's probably a Philodendron. Others should also lend an opinion soon.

Thanks for feedback. The leaves do not split.

Looking closely at the original image it seems as if the petioles don't have genicula.

It could be a Rhaphidophora. I'm not sure if they have geniculum though as I've never had one. Where did this plant come from?

This plant is indoors in a Berkeley, California home. It belongs to a friend of mine whom I've convinced to root a cutting for me. She inherited the plant from an old friend who moved away, hence the gap in knowledge about the plant.

The plant has a habit similar to pilea piperomioides (below), but not the same leaves.

Please tell us when you find out. I'm curious

It could certainly be a Monstera deliciosa. It lives on top of a bookshelf and gets a good dose of indirect light. I will have to see how it does at my place in a bit more light and will see how the leaves develop with time.

Update: The owner has had this for years and the leaves do not split.

If it doesn't get enough light the leaves will not split. They will stay juvenile until it does get better light. Keep in mind that what we see as bright is not to a plant. Light loses its potency the further away it is from a source by 4. 1 foot away from a window is 4 times more bright than 2 feet away, 16 times brighter 3 ft away, and so on. That is why a plant needs to be directly in front of and as close to a light source as possible to grow.

I was considering Anthurium if you saw genicula on the petioles. Since you don't, that also rules out Monstera. Rhaphidophora would be the other thing I'd look at, aside from Philodendron. Philodendron genus has around 900 species, and some of the species have many cultivars.

The presence or absence of split leaves isn't a definitive gauge of Monstera deliciosa. As said, the juvenile leaves aren't split, and some vines can survive for decades in their juvenile form, especially Pothos (Epipremnum,) arrowhead vine (Syngonium) and many others that often never get the conditions or situation required for foliage to progress to adult form.

Having something to climb on is a good way to try to encourage adult form foliage, for any epiphytic vine.

Does the donor plant have any type of support trellis or pole?

I just checked the juvenile growth on my monstera and it looks identical to the first and second picture. I also read that the geniculum on young growth will not show as readily as mature growth. I am not convinced that it is lacking any geniculum. You can see the leaves turned in different directions, without geniculum, this would not be. I am going to stick with a monstera that is in need of light.

It looks exactly like a pot of young Monstera at my sister's house.

Josh

It looks like Monstera deliciosa but surely it isn't. At that size, I would expect splitting in the leaf and it seems to have no intention of splitting. It wants its leaves heart-shaped and that's it. So I think it might be Some Kind Of Philodendron. I've seen such things with heart-shaped leaves but I don't think I ever knew their name. Other than Philodendron.

Then again, my memory is appalling until someone gives it a jolt.