In the past, Native Americans of North America had an abundant traditional herbal legacy for treating illnesses, disorders, and wounds. Unfortunately, much of the ethnopharmacological knowledge of North American Indians has been lost due to population destruction and displacement from their native
Thiarubrine A, a dithiacyclohexadiene polyine from the roots of Chaenactis douglasii, and a related dithiacyclohexadiene from Rudbeckia hirta exhibit strong light-independent antibacterial and antifungal activity. This activity is enhanced by exposure to visible light. Visible light also converts
Symphyotrichum novi-belgii (L.) G.L. Nesom (synonym Aster novi-belgii L.) is an autumn flowering perennial used in gardens and as a cut flower. During the last 20 years, it has been developed as a potted plant, thereby increasing its economic importance. In Denmark, 7 to 8 million S. novi-belgii
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