Brickellia veronicifolia
''Brickellia veronicifolia'' is a North American species of plants in the family Asteraceae. It is widespread across much of Mexico, from Chihuahua to Oaxaca. In the United States, it very rare, found only in the Chisos Mountains inside Big Bend ...
''.Brickellin, a novel flavone from Brickellia veronicaefolia and B. chlorolepis. Roberts M. F., Timmermann B. N., Mabry T. J., Brown R. and Matlin S. A., Phytochemistry, 1984, volume 23, no 1, pages 163-165,