Mentha sativa

Yerba Yer"ba, n. [Sp.] (Bot.) An herb; a plant. [1913 Webster]

Note: This word is much used in compound names of plants in Spanish; as, yerba buena [Sp., a good herb], a name applied in Spain to several kinds of mint ({Mentha sativa}, {viridis}, etc.), but in California universally applied to a common, sweet-scented labiate plant ({Micromeria Douglasii}). [1913 Webster]

{Yerba dol osa}. [Sp., herb of the she-bear.] A kind of buckthorn ({Rhamnus Californica}).

{Yerba mansa}. [Sp., a mild herb, soft herb.] A plant ({Anemopsis Californica}) with a pungent, aromatic rootstock, used medicinally by the Mexicans and the Indians.

{Yerba reuma}. [Cf. Sp. reuma rheum, rheumatism.] A low California undershrub ({Frankenia grandifolia}). [1913 Webster]