Is your plant outside, where a seed from a tree may have fallen in it?
Can you post a photo of it?

Elsie

No, the tree like plant has always been a part of it. It has never been outside.

Dkearby..you need to be more specific. You said you 'think' you have a Philodendron. Without more information, it's impossible giving an answer.

Does the tree-like plant have any special qualities? Is it all green? What's its height? Are its roots connected to the 'possible' Philodendron? Toni

A picture would be best. Toni

There is the Meconostigma branch of the Philodendron line which are sometimes referred to as the "Tree Philodendrons". they are not really trees but have a stiff stem and grow more or less upright rather than vining. Philodendron bipinnatifidum is one of many excellent examples.

I don't mean to be rude and I'm sorry if I come off that way but just saying you have a stem and some leaves simply isn't enough information for us to give you any help. Posting a photo of your plant would really help a lot, even if its only a cellphone picture. We'll be happy to explain to you how to post a photo here.

Danny

I am going to post a photo in the gallery as I can't seem to figure out a way to post one here. BTW - I think the plant I have is an arrowhead plant, and not a philadendron. Please check out my photo in the gallery section and tell me what you think.

Here is a link to the picture

Here is a link that might be useful:

Yeah that could be a Syngonium but I don't know them well. The tall one looks like a dracaena, possably dracaena fragrans.

Danny

I agree with dellis on both ID's. Not philodendron, but syngonium. Common name for dracaena fragrans is corn plant. Both look great! If your syngonium stems get too long, you can break them off and pot up as a new plant, or put in water to start roots first. Just make sure there are some "root nubs" on the piece you remove.

WHat do the "root nubs" look like?

You don't really need to see them, you can feel them w/ your fingers as tiny bumps at the bottom of a leaf's stem, which will then grow into roots.

Syngonium are not high light plants, they do well w/ bright, indirect light. One can even water root these w/out root nodes, I just did, a big tall section of Syngonium.