If the photo of a leaf on this edu. site is an indication of what the leaves are usually like on Tilia americana, I doubt it is that from this description ..
Leaf: Alternate, simple, ovate to cordate, 5 to 6 inches long, with serrate margins, pinnately veined, base is unequally cordate, green above and paler below.
http://dendro.cnre.vt.edu/dend...
Tilia cordata, how does that compare? Other photos I found named T. cordata look just like Tilia x euchlora but you have to be careful they are correctly identified.
Leaf: Alternate, simple, ovate to cordate, 2 to 4 inches long, with serrate margins, pinnately veined, inequilateral base, green above and paler below.
http://dendro.cnre.vt.edu/dend...
Aren't the leaves much more deeply cut at the base where the petiole joins on cordata?
http://www.garten.cz/a/cz/2665...
If these photos are correct, leaf venation and leaf shape look to match Tilia x euchora best ..
http://www.garten.cz/a/cz/2692...
http://www.garten.cz/a/cz/2665...
http://www.garten.cz/a/cz/2376...
I always look very closely at leaf shape and venation. There's several Tilia species on the same site so I imagine they know what they are doing ..
http://www.about-garden.com/se...
