|Leaf heart-shaped, four to five inches long and 3/4 inches wide. The base of the leaf is often unequal. Edge of the leaf is coarsley toothed. Underside of the leaf smooth except for tufts of rusty colored hairs. Veins very noticeable. Twigs, gray-brown. -- Basswood||Leaves not heart-shaped and not very wide, but may be long.|
This key was developed by "bt" in June 1982. It was put into HTML format by Stephen Ostermiller in July 1997. Copies of the entire guide in zip format that may be taken to camp on a laptop are available to those who write.