Investigation on Natural Resources of Rhododendrons in Danba County of Sichuan

Danba County has plenty of wild rhododendrons. An initial investigation was conducted on the resources of the genus Rhododendron in Danba by filed collection of live materials,as well as by researches on the specimens in herbariums. The results showed that in this investigation twenty-two species had been found and each of them had a great amount of populations; the community of rhododendrons was stupendous. Specifically,the authors have found Rhododendron danbaense L. C. Hu and Rh. nigroglandulosum Nitzelius in many places. Those two taxa were believed to have few amounts in the wild,and according to Flora Repubulicae Popularis Sinicae there was no specimen of Rh. nigroglandulosum found in China yet.