Oiltea trees (Camelia oleifera Abel) are cultivated by Taiwanese farmers around the hill side in Nanto Shiann. Those oiltea trees affected by dwarf mistletoe showed leaves yellowing and growth abnormal. The dwarf mistletoe with a very broad host range was named Bifaria opuntia by Prof. Chao of National Taiwan University, however oiltea was its new host found by the author. This parasitic mistletoe produces small viscid seeds which can be spreaded by wind also by birds to other susceptible host branches. Under favorable conditions, the seeds germinate to produce germ tube which penetrate into the epidermis of the host plants such as oiltea, and sucking nutrient of oiltea for the growth of the mistletoes. Finally, the leaves of the infected oiltea tree show yellowing and growth abnormal.
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