Here is an update folks. I didn't take the chance to get a leaf from the second tree I saw since I saw the private sign. The other reason why I didn't try anymore is because that private st/road is perpendicular to that street is a busy lane(where I am at) 35mph road at Brinker, Barrington IL. I don't want people honking at me especially it's a one lane per side. :) For the first tree, I was able to get one leaf since it was on public main road. It was a very busy road but parking was ok. I took one from the ground at 9am which had some yellowing on it and put it in my car. Then when I went back to my car at 5pm, it has dried so quickly. Anyways, I really don't have to worry about the first tree since majority says it Sugar Maple. Also, I didn't understand what krazyaroider said below. Why did you mention it was a joke? -----------begin--------- I cut & pasted this previous post... Is this serious or a joke ??? - "The sign on the 2nd tree says it's a "Private Drive". -----------end-----------

chinese tallow tree, invasive in florida

When I first saw the top fruit my mind said avocado but Im not expert on those. Doesnt look like any kind of citrus to me thought. Especially with those big bumps on the blossom end. Do the leaves smell like citrus when you break them?

Yes, but most citrus grow true-to-type from seed due to Nucellar embryony... certainly most oranges and grapefruit. Exceptions are Meyer lemon, 'Temple' oranges, Clementines, Persian lime, most pummelos, I think. Tangors and Tangelos put off a high % of nucellar seedlings. According to my notes where I keep my citrus information, I had this filed away. This is a quote from Dr. Malcolm Manners, professor of Citrus Science at Florida Southern College: 'Nearly all of the sweet oranges (C. sinensis) come true-to type from seed. A few (some navels, 'Pineapple') make minor variations in their seedlings, even though they are technically nucellar. Nearly all grapefruit also come true-to-type. The only exception I can think of is 'Thompson Pink' which produces 'Marsh Seedless' seedlings, since it is a periclinal chimera, and the mutant tissue is not in the layer that makes the seeds. The vast majority of mandarin types are also nucellar, and therefore, come true-to-type. Also, nearly all lemons, 'Key' Lime, and most other sour-fruited types come true. Persian limes do not. Meyer is monoembryonic, so does not come true-to-type from seed. Actually, the list of citrus that don't come true is quite small.'