Download Cannabis : evolution and ethnobotany by Robert C. Clarke, Mark D. Merlin PDF

By Robert C. Clarke, Mark D. Merlin

"'Cannabis: evolution and ethnobotany' is a complete, interdisciplinary exploration of the common origins and early evolution of this well-known plant, highlighting its ancient position within the improvement of human societies. hashish has lengthy been prized for the robust and sturdy fiber in its stalks, its fit for human consumption and oil-rich seeds, and the psychoactive and medicinal compounds produced through its lady vegetation. The Read more...

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hashish has been prized for the sturdy fiber in its stalks, and oil-rich seeds, and psychoactive and medicinal compounds produced by means of its lady vegetation. This ebook comprises comprehensive, Read more...

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Additional resources for Cannabis : evolution and ethnobotany

Sample text

De Candolle’s basic principles accounting for morphological changes in crop plants during domestication still hold true. However, physiological changes are probably of greater importance as plants adapt to new ecological conditions but are harder to recognize as they leave no direct fossil evidence. As we have noted, Cannabis grows in a wide variety of areas across distant regions of the world and thrives in temperate continental climates. But because its distribution is often so closely associated with human settlements or trade routes, the original native range is obscured.

Areas of rich diversity are often interpreted as probable places of origin, or at least areas with lengthy periods of naturalization, since increased diversity can be a product of increased MAP 3. Asian ranges of differing Cannabis biotypes and their population status. Data derived from the written and oral reports of twentieth-­ century botanists, agronomists, and travelers. Larger circles indicate increased density of populations (cartography by Matt Barbee). ) time during which to diversify.

Indica var. kafiristanica. Hillig and Mahlberg (2004) preserved this name and assigned it to wild and feral narrow-­leaf drug ancestor (NLDA) biotypes. A second variety was described with a colorless seed coat and named C. indica var. afghanica. Hillig and Mahlberg (2004) also preserved this name to represent broad-leaf drug (BLD) biotypes, which they called wide-leaf drug biotypes (see also Chapter 11). Vavilov concluded that Afghan Cannabis varieties were entirely different from both wild and cultivated European and Asiatic Cannabis and therefore must be considered as varieties of C.

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