Clarkella nana var. siamensis (Craib) Fukuoka & N.Kurosaki
Clarkella siamensis Craib
Clarkella sianensis Craib
Ophiorrhiza nana Edgew.
Ophiorrhiza pellucida H.Lév.
Sphenodesme mekongensis
Petraeovitex bambusetorum