Abstract: Orthotrichum tortifoliumLewinsky,an endemic to Bhutan,was recently first reported in China.Two specimens were collected by us in April,2021 from Gongga Mountain Nature Reserve,Sichuan.The morphology was well consistent with the type of O.tortifolium.It was remarkably characterized by the flexuose to crisped leaves and the high basal membrane of endostome segments,which were rare in Orthotrichum.We provided detailed morphological description and photos here,and discussed its main differences from close species.