Classic texts: Sayre 1917.
Pterocaulon virgatum
Pterocaulon virgatum (L.) DC.
Engl.: wand blackroot, Indian black-root.
Bot. syn.: Gnaphalium virgatum L., Pterocaulon pycnostachyon (Michx.) Ell.
Classic texts: Sayre 1917.
Classic texts: Journals: AJP 1885.