DIDYNAMIA. GYMNOSPERMIA. 81 
A genus of near 40 species chiefly indigenous to Fu- 
rope, extending also throughout Northern Asia, and into 
the southern hemisphere, there-existing species in Chili, in 
the isle of France, and at the Cape of Good Hope. 
404. LEONURUS. LZ. (Mother-wort.) 
Cali pentangular, 5-toothed. Upper lip of 
the corolla vilious, flat, entrre; lower lip 3-part- 
ed, with the middle segment undivided. «Lobes 
of the anthers parallel.” R. BRown. 
Leaves more or less Inbed; flowers axillary verticillate, 
sessile, bracies minute? anthers in some species scattered 
with shining spots. 
Species. 1. Ls Cardiaca. Now as commonly natu- 
ralized as in Europe. 
A small genus of about 7 species, nearly allied to PAlo- 
mis and indigenous to Siberia, Tartary and China, with 
the exception of 1. Marrubiastrum, with oblong toothed 
leaves and a corolla scarcely longer than the calix, which 
ean scarcely be a congener; the ZL. Cardiaca, as has been 
su ted by Miller, 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. ae 
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 capitate. easy 
Species. 1. L. martinicensis. Intvoduced probably from 
the West Indies, now naturalized as a weed in the gardens 
and suburbs of Savannah in Georgia.—Mr. Camier. 
as tropical genus indigenous to the East and West In- 
ies. . pe 
406. GLECHOMA. L. (Ground Ivy. Gill. 
