magnified 75 diameters. a, outer bark or cork; b, sclerenchyma cells; c, sclerenchymatous or bast fibres; d, parenchyma cells; e, medullary rays.
This image is from the article "Cascara Amarga—Honduras Bark." in the American Journal of Pharmacy, 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.
http://www.henriettes-herb.com - Copyright 1995–2020 Henriette Kress.