In copalm balsam, a yellowish thickish fluid, exuding from the Sweet Gum-tree of N. America, which has been used instead of storax.
1858. Hogg, Veg. Kingd., 702. Liquidamber styraciflua … yields by incision of the bark a liquid balsam, called liquidamber, or copalm balsam … Another product is obtained from the tree … of a dark colour … called black copalm.
1884. Miller, Plant-n., Liquidambar styraceflua, Copalm Balsam-tree, Sweet Gumtree.
