of Lobelia syphilitica; a, front (under) view of a column; b, side view of same; c, pistil, stamens being removed. (Enlarged).
This image is from Blue Lobelia in the Drugs and Medicines of North America.
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.
http://www.henriettes-herb.com - Copyright 1995–2022 Henriette Kress.