Materials for Chinese Viscoideae TAXA NOVA GENERIS SILENES L. E FLORA SICHUANENSE ET YUNNANENSE Flowering Characteristics and Chemical Control of the Buds of Arceuthobium sichuanense Materials for Chinese Viscoideae Genetic Diversity and Population Genetic Structure of Arceuthobium sichuanense Pathotoxin Determination of Lophodermium on Pines in Sichuan Province and Their Differences in Pathogenicity Effects of Arceuthobium sichuanense infection on photosynthesis and transpiration of Picea wilsonii