Myrcia peduncularis is a species of flowering plant in the myrtle family[1] known by the common names Maricao lidflower and serpentine lidflower. It is endemic to Puerto Rico, where it grows on serpentine soils at 300 to 400 meters in altitude, to a height of between 1.5 and 2 meters. There are perhaps 200 to 300 individuals left. Besides this, "there is nearly no information in the literature about this species."[2]