Hence the replacement name , Gratiola amphiantha .
D. Estes & R.L. Small wanted to transfer the species to Gratiola , but could not call it Gratiola pusilla because Willdenow had already used this name for another species .
The replacement name , Gratiola amphiantha .
D. Estes & R.L. Small wanted to transfer the species to Gratiola , but could not call it Gratiola pusilla because Willdenow had already used this name for another species .