rhipid-
combining form 
or rhipido-
Etymology: New Latin, from Greek, from rhipid-, rhipis fan; akin to Greek rhip-, rhips wickerwork, rhiptein to throw, Old High German rīban to grate, rub, turn, twist, Middle Dutch wriven to rub, twist; basic meaning: turning 
 : fan  — chiefly in taxonomic names
< Rhipidistia >
< Rhipidoglossa >
or rhipido-
< Rhipidistia >
< Rhipidoglossa >