The barks of Putika and Tilvaka are used for purgation therapy. Indications of bark of Krishnagandha are erysipelas, inflammation, piles, ringworm, abscess, nodules, dermatosis and gangrene (alaji).
The wise physician should also acquire the knowledge of the above mentioned six plants (three with latex and three with bark) of their pacification actions.
Summary of descriptions of the plants: Thus have been described the fruiters, rooters, sources of unctuous substances, salt, urine, milk and the six plants whose latex and barks are used.
ओषधीर्नामरूपाभ्यां जानते ह्यजपा वने| अविपाश्चैव गोपाश्च ये चान्ये वनवासिनः ||१२०||
Sources of identification of plants: Goat-herds, shepherds, cowherds and forest-dwellers are acquainted with names and forms/identification of various medicinal herbs and the plants.