Native Medicinal Ethnobotany of Central Coastal California - Paperbackby Keith Rayburn (Author) With a history of eight thousand years of empirical experimentation, it's likely that at least some of the medicinal plants utilized by the Ohlone provided true relief from illness. Here is a presentation of what is known of these uses, arranged in conceptual categories, along with discussions of the relevance of ancient ethnobotanical knowledge to the modern world. The author a practicing physician provides an argument for