Regions identified by applying the dendrogram algorithm to our G-virial map. The results from the Perseus molecular cloud (upper panel) and Ophiuchus molecular cloud (lower panel) are presented. The grayscale images correspond to the velocity-integrated ¹³CO(1–0) emission and the contours correspond to the projected boundaries of the identified regions. These regions correspond to the “leaves” of the dendrogram. The conventional names of the regions are labeled.