Cryptogams.

(Part II: Drug Description.

Section I - Organic drugs from the Vegetable Kingdom, described and arranged according to Families.)

Plants producing spores.

A Manual of Organic Materia Medica and Pharmacognosy, 1917, was written by Lucius E. Sayre, B.S. Ph. M.

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.