Polygala dunniana differs from P. saxicola and P. koi in having smaller, elliptic to obovate or spoon-shaped leaves (10-15 mm long, 5-8 mm wide) covered with white transparent short stiff hairs near the leaf margin. Its inflorescence is very short with few large flowers (18 mm long), white or pale green-white in color, with the keel petal having 4 finger-like appendages.
Polygala dunniana
Details about the fruit are not specified in the text.
It is found in Guizhou and Yunnan provinces of China, growing on mountain slopes under Pinus forests or on open mountainsides, at around 1900 meters above sea level.