Crescentia. Crescentia Cujete L.—The fruit of this West Indian and South American plant (fam. Bignoniaceae) has been found by Gustav Peckoldt to contain crescentinic acid and a blue coloring matter allied to indigo. (Ph. Rund., Aug., 1884.)
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.