Primula is a famous alpine flower distributing throughout the moister and cooler regions of the northern hemisphere. By far the largest concentration of species is found in the great chain of Himalaya and western China, especially Hengduan Mountains in southwest China is the modern distribution and diversification centre of the genus Primula, and of which Yunnan Province has more than 120 species. Most species are beautiful and many species have proved to be great garden or ornamental flowers. The flo...
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