What's the difference between milkwort and polygala?

Milkwort

Definition:

(n.) A genus of plants (Polygala) of many species. The common European P. vulgaris was supposed to have the power of producing a flow of milk in nurses.

Example Sentences:

Definition:

(n.) A genus of bitter herbs or shrubs having eight stamens and a two-celled ovary (as the Seneca snakeroot, the flowering wintergreen, etc.); milkwort.

Example Sentences:

(1) The chloroform fraction of Polygala macradenia exhibited activity against the P-388 lymphocytic leukemia and human epidermoid carcinoma of the nasopharynx test systems.
(2) This paper reports the harvesting and storing of Polygala tenuifolia seed, the operating process and method of seed propagation both in the laboratory and in the field, the relationship between Palygala tenuifolia seed germination, seed treatment and temperature and humidity, and the importance of suitable conditions and climatic factors in the sexual propagation of the seed.
(3) It is suggested that the aryldihydronaphthalene lactone product isolated from the tumor-inhibiting extract of Polygala polygama and previously named beta-apopolygamatin [17] has in fact the structure 1-(3',4'-methylene-dioxyphenyl)-3-hydroxymethyl-7,8-dimethoxy-3,4- dihydro-2- naphthoic acid lactone [18].
(4) There are 380 species belonging to 129 families and 322 genus, among which notably Embelia parviflora, Malus doumeri, Panax notoginseng, Polygala fallax, etc.