The medicinal qualities of various herbs and flowers are well documented, but many people are reluctant to dine on their favourite blooms.

Jatropha has long been prized for its medicinal qualities.

They have been carefully cultivated to be rid of any hallucinogenic or medicinal qualities and are grown strictly for their fibre.

Though primarily for show, some plants had medicinal qualities as well.

It should not be confused with ozokerite, also a humic substance, similar in appearance, but apparently without medicinal qualities.