yielding 40.8g (13.6%) of root bark and 35.88g (11.96%) of stem
bark extracts of V. amygdalina, 32.25g (10.75%) of root,
30.03g (10.01%) of twig extracts of G. latifolium, and
59.7g (19.90%) of root bark and 54.9g (18.30%) of stem
extracts of N. latifolia.