作者：曾惠中
類別：圖書文獻類 - 手稿
材質：紙質
年代：1969~1969
尺寸：長:24.6 x 寬:20.5 (cm)
藏品來源：曾惠中捐贈
登錄號：2019-001-0001-072
藏品描述：本病主要危害嫩芽及嫩葉，有時也感染嫩梢，病害發生初期葉片上形成小點狀病斑呈淡綠、淡黃或淡紅色透明，逐漸擴大為圓形病斑，成熟的病斑背面可形成白色粉狀物，即為傳染源。
An infection of tea plants, caused by the fungus Exobasidium vexans, characterized by blister-like lesions on the leaves. E. vexans prefers to attack the young leaves on the lower half of hosts and presents as small yellow translucent leaf spots which progress to lesions. These lesions give the lower surface of the leaf the characteristic blister like appearance.