Abstract: The preliminary observation and investigation on Phacellaria rigidula was carried out in a mixed needle and evergreen broad leaved forest in Yunnan,China.The results showed that P.rigidula is only one species belonging to Phacellaria of Santalaceae in the investigated area.This species is a holoparasitic plant with a dominant yellow and brown color.It parasites on other hemi parasitic plants of Loranthaceae,such as Taxillus caloreas var. fargesii and Scurrula parasitica var. Graciliflora ,but mainly on Taxillus caloreas var. fargesii .The both hosts of Phacellaria rigidula live on the trunks and big branches of Keteleeria evelyniana that forms a sparse forest or in isolated status.From this view, Phacellaria rigidula could be considered as a super parasite.The flowes are unisexual and dioecious.Many branches cluster together to form a mini shrub.The shoots out of its host′s bodies are annual,and the parts in its host′s bodies are perennial.It is considered that the sites being parasited in the bodies of its hosts may be shifting to the apexes of the host branches.There are dense flowers and fruits almost on the whole shoot.The flower blossom and fruits mature all the year round.Its seeds are spread by some kinds of special bird.The pollen is spread possibly by a sort of ant.The morphological features and others related aspects about ecological pyramid and its adaptability to the seed spreading and pollen spreading media were also discussed.