钟萼木褐斑病是一种由Dendrophomasp.引起的新病害。该病害危害钟萼木叶片，导致叶片大量提早脱落。调查了7个样地的钟萼木，有6个样地发生褐斑病，其中5个样地的株发病率达100％。病害始于6月中旬。6月下旬至7月上旬，病害很严重，叶发病率可达70％，病情指数30。病害发生与温度、坡度、海拔高度及栽培管理等因素有关。旬均温25℃，有利于病害流行。 Bell calyx spot is a new disease caused by Dendrophomasp. The disease endanger bell calyx leaves, leading to a large number of leaves early off. In this study, seven samples of calyx cork in seven plots were surveyed, and brown spot was found in six plots. The incidence of five isolates was 100%. The disease started in mid-June. Late June to early July, the disease is very serious, the incidence of leaf up to 70%, disease index 30. Disease occurs with the temperature, slope, altitude and cultivation and management and other factors. Average temperature 25 ℃, is conducive to disease epidemic.