AUGUST. 345 
MenrHa putecium. Penny-royal. This is the smallest 
of the genus, having prostrate stems, and small hairy leaves, 
which are egg-shaped. . Flowers very small, purple, and in 
whorls among the leaves. Smell strong; much used in 
medicine. Common by the margins of brooks, but rare in 
Scotland. 
DIDYNAMIA. GYMNOSPERMIA. 
COROLLIFLOR2. LAMIACES. 
GALEOPSIS. (HeEmp-Nnerrte.) 
Generic Character. Calyw bell-shaped, five-toothed, points 
sharp. Corolla projecting, the throat inflated, upper lip arched. 
Gatzopsis Terranit. (Plate XIX. Fig. 73.) Common 
Hemp-Nettle. Common in corn-fields and cultivated ground, 
growing about two feet high, the stem hairy and swollen 
below the jomts. Leaves egg-shaped, hairy, stalked and 
cut at the edges. Flowers purplish and often white. Points 
of the calyx very sharp and conspicuous. 
GALEOPSIS VILLOSA. Downy Hemp-Nettle. A beautiful 
species, found only in sandy corn-fields in Yorkshire, Lan- 
