Linden tree problem of messy lawn.
The city of Chatham provided home owners with replacement trees which we had to plant in the city right of way. We picked it out when there were no leaves and bare rooted. We were told it was a linden tree.and we have loved it as it matured into a beautiful shape. The last 3 years when the leafs sprout there also is a small leaf-like formation much smaller than the actual leaf about 2-3 inches long and about a 1/2 inch wide. These coincide with the dropping of the maple buds. However these do not appear to contain a seed pod inside the small leaf. Also, this heavy dropping process has been occurring for about three weeks and as in prior years will continue throughout the year till late fall frost. You cut your grass and the next day the grass is strewn with these 'willow shaped droppings and it looks really messy. Is this a feature of a Linden or were we provided with a tree that no gardener would likely choose for a front yard location.
I'm not clear on what is dropping from your tree.
This article has information on a Linden Tree.