Gerardia:
Gerardia pedicularia:
Gerardia pedicularia L., Scrophulariaceae: See Aureolaria pedicularia (L.) Raf.
Gerardia tenuifolia:
Gerardia tenuifolia Vahl, Scrophulariaceae: See Agalinis tenuifolia (Vahl.) Raf.
A herbal distance course
Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.