The fourth Sino-US botanic expedition into Hengduan Mountains fruitful

A group of Chinese and US botanists recently completed their one-and-half-month survey of plant biodiversity in the Hengduan Mountains in southwest China, one of the richest gene pools on Earth. By trekking for more than 10,000 km, the botanists collected primary data in the northern Sichuan basin noted for their floral diversity fragility and of crucial significance.