DIDYXAMIA. GYMXOSPERMIA. 51 



A genus of near 40 species chiefly indig-enous to Eu- 

 rope, exitnding- also ihroughout Nortiiern Asia, and into 

 the southern liemisphere, there existing species in Chili, in 

 the isle of France, and at the Cape of Good Hope. 



404. LEONURUS. L, (Mother-wort.) 



Culix pentiingular, 5-tootlied. <.'pper lip of 

 tlie corolla villous, flat, entire; lower lip S-j)art- 

 ed, with the middle ses:ment undivided. "Lobes 

 of the a/i/Aers parallel." R. Brown. 



Leaves more or less lobed; flowers axillary verticillate, 

 sessile, brac'es minute? anthers in some species scattered 

 with shining spots. 



Species. 1. L. Cardlaca. Now as commonly natu- 

 ralized as in Europe. 



A small genus of about 7 species, nearly allied to Phlo. 

 mis and indigenous to Siberia, Tartary and China, with 

 the exception of L. JMamibiastriim, with oblong toothed 

 leaves and a corolla scarcely longer than the calix, which 

 can scarcely be a congener; the L. Cardiaca, as has been 

 suggested by ^liller, originated probably in Tartary; and 

 is only naturalized in Europe in the same manner as it is 

 now in North America. 



405. LEUCAS. R. Brown, 



Calix 10-striate, 6 to 10-toothed. Upper lip 

 of the corolla galeate (or in the form of a hel- 

 met,) galea bearded, entire; lower lip long and 

 trifid; intermediate segment larger. Lobes of 

 the anthers divaricate. Stigma shorter than 

 the upper lip. 



Herbaceous ? often annual; leaves entire; verticills 

 many flowered, subglobose or capiiate. 



Species, 1. L. mariinice?i-ns. Introduced probably from 

 the West Indies, now naturalized as a weed in the gardens 

 and suburbs of Savannali in Georgia — Mr. (Emle'r. 



A tropical genus indigenous to the East and West In- 

 dies. 



406. GLECHOxMA. L. (Ground Ivy. Gill. Ale- 

 hoof.) 



