What is any tree yielding tacamahac resin, especially, in North America, the balsam poplar, or balm of Gilead (Populus balsamifera) called?

tacamahac — (Bot.) Any tree yielding tacamahac resin, especially, in North America, the balsam poplar, or balm of Gilead (Populus balsamifera). (Webster's 1913.)

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