Looks like my avocado tree.

no, I am sure I did not plant an avocado seed, but thanks for answering my post :-)

Evelyn

Some annona relative, maybe a Cananga odorata, ylang ylang.

Also very well could be Annona squamosa, A. glabra, (sugar apple or pond apple)

Where was the seed, other than south Florida, a garden a park, near a ditch along side a road?

Alan

Alan, I picked up the seed at the Edison Ford Garden Estate by Ft. Meyers. The seed reminded me of a chestnut, but not as big, flatter and smooth brown. Eyecatching, or else I would have never picked it up.
I did compare the leaves with online pictures of the ylang ylang, but thats not it.

Evelyn

I looked at all my Annonas and Ylang Ylang, and although they "do" look somewhat similar, my plants have leaves that do not attach directly opposite each other on the branch, they are spaced slightly irregularly. Plus, they all have new leaves at the tips of every branch, unlike yours which end in a blank.

Didn't Edison collect all kinds of unusual plants in his attempt to make rubber?

I wonder if a call to the museum would provide a list of plants on the grounds?

I'd really like to know this one!

Lisa

Abendwolke pointed out, quite correctly, that her plant has compound leaves with 6 to 8 leaflets and no terminal leaflet. This rules out avocadoes and everything in the Annona family, including ylang ylang, all of which have simple leaves.

I don't recognise this tree, but my best guess is some legume in subfamily Caesalpiniaceae. Many members of this subfamily have paripinnate leaves like this.

Maybe new leaf growth is giving away its secret? here are two pics I took this morning, it seems the little tree grows over night:
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:-)

Here is a link that shows the plants/trees on the estate. Hope it helps.

Here is a link that might be useful: Plant List

thank you for the link to the plant list gvierra, and sure thing there is an akee tree listed.