Piper officinarum:
Piper officinarum:
Piper officinarum DC., Piperaceae: See Piper retrofractum Vahl.
Practical Herb Cards 2
Etäopiskelu
Distanskurs
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.