Scientific Name: Family: Rosaceae  (ro-ZAY-see-ee) SubFamily: Rosoideae Genus: Potentilla  (poh-ten-TILL-uh) Species: simplex and recta  (SIM-plecks)   Common Names: In Arkansas there are two common species of Cinquefoil; recta also called Sulpher Cinquefoil or Rough-fruited Cinquefoil and simplex also called Common Cinquefoil, Five Fingers, Five-Finger Blossom, Five-finger grass, Sunkfield, Syn…