The fire was caused by an illegal campfire.  This species was originally described and published in Flora Americae Septentrionalis; or, a Systematic Arrangement and Description of the Plants of North America 1:282.
Loài này được Pursh mô tả khoa học đầu tiên năm 1813. ^  This species was originally described and published in Flora Americae Septentrionalis; or, a Systematic Arrangement and Description of the Plants of North America 1:282.