found: Work cat.: Boyd, R.S. Management of Xyris tennesseensis, a federally-endangered plant species, 2003(Hypericum densiflorum; St. John's-wort)
found: Baily, L.H. Hortus third, 1976(Hypericum densiflorum; H. glomeratum Small)
found: Baily, L.H. Standard cyclopedia of horticulture, 1935(Hypericum densiflorum; H. prolificum var. densiflorum)
found: Lance, R. Woody plants of the southeastern United States, 2004(Hypericum densiflorum; Dense St. John's-Wort)
found: Gerth van Wijk, H.L. A dictionary of plant-names, 1971(H. densiflorum; American yellow heath)
found: PLANTS database, via WWW, February 21, 2007(Hypericum densiflorum; Bushy St. Johnswort; Hypericum glomeratum; Bushy St. John's-wort; Dense St. Johnswort)
found: Hypericum densiflorum via WWW(Hypericum densiflorum; St. John's-wort; Glade St. John's-wort; Bushy St. John's-wort; St. John's wort; Bushy Saint John's wort; Bushy Saint John's-wort, Dense St. Johnswort; Glade St. Johnswort)
notfound: Web. 3
