It has two quite different-looking leaves, intermixed on the same branches, often right next to each other. One type is dark green, shaped roughly like the spades in a card deck. The tips are very pointy. The other type is very light green, about the same length as the first type, but narrower and oblong (horse racetrack shape). On one tree the former were ~2" long and 1 1/2" wide, the latter 2" long and 1/2" wide.
There are also clusters of buds, a dozen or so together. They are whitish, between the size of a BB and a pea, many with a tiny brown spike sticking out.
I saw these in Kansas City and wonder what kind of tree it is.
It appears basswood is correct. The image linked by Harmonious Discord, as well as this image I found on Google, are consistent with what I remember seeing.
While there is some similarity with some mulberry leaf images I found, the buds/berries were different and I didn’t see any of the second type of leaf (narrow, light green). I didn’t see any similarity with the larch.
