Download e-book for iPad: 36 Healing Herbs: The World's Best Medicinal Plants by Rebecca L. Johnson

By Rebecca L. Johnson

Nationwide Geographic's advisor to 36 "super" herbs akin to aloe, echinacea, ginkgo, and peppermint contains a wealth of crucial info at the background, tradition, folklore, and technological know-how of conventional and modern natural medication in all significant tradition components of the area. Emphasizing present study and healing makes use of, the quantity offers an A-Z directory of 36 of the greater than 80,000 recognized medicinal crops world wide. information regarding every one plant comprises conventional and present medicinal makes use of, universal and Latin names, description, habitat, cultivation and coaching, examine, and warning indicators. extra essays at the therapeutic vegetation of Africa, Australia and New Zealand, primary and South the US, China, Europe, India, North the United States, the center East, and Oceania supply insightful glimpses into the interesting diversity and variety of neighborhood well-being practices whereas additionally revealing the multifaceted roles that herbalists, healers, and herbal-medicine practitioners play within the lives in their sufferers.

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Additional info for 36 Healing Herbs: The World's Best Medicinal Plants

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If the predation pressure on a plant population increases over several generations, one conceivable adaptive response which selection might be expected to favor is the production of higher concentrations of defensive compounds already produced by the plant species 8 . Such an evolutionary response by the plants might be adaptive if the increased PLANT APPARENCY AND CHEMICAL DEFENSE 21 predation pressure results mainly from generalist enemies or perhaps from some 'family specialists' against which the increased concentrations could have a quantitative impact, thus forcing the enemies directly or indirectly to switch to other available food-plants.

Pp. 83-97. Siam Institute for Mathematics and Society, Philadelphia. Rothschild, M. 1972. In "Insect/Plant Relationships" (H. F. ), pp. 59-83. Blackwell Scientific Publications, Oxford. Schoonhoven, L. M. 1969. Ent. expo et appl. l2:555. Schoonhoven, 1. M. 1972. In "Insect/Plant Relationships" (H. F. ), pp. 87-99. Blackwell Scientific Publications, Oxford. Scriber, J. M. 1975. D. thesis, Cornell University, Ithaca. Shapiro, A. M. 1968. Ann. Ent. Soc. Amer. 6l: 1221. Soo Hoo, C. F. , and G. Fraenke1.

Immature foliage. For a period of about three weeks every spring, from the time of bud opening until they have almost reached full size, the leaves of oak trees (Quercus robur) , in England, are especially vulnerable to attack by insects. The developing leaves have a high nitrogen and water content and they lack condensed tannins and physical toughness 21 • The 'phenological window' represented by these nutritious leaves, is exploited by a large number of lepidopterous species several of which may reach very high densities in some years and cause total defoliation of trees.

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36 Healing Herbs: The World's Best Medicinal Plants by Rebecca L. Johnson


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