306 POPULAR FIELD BOTANY. 
DIDYNAMIA. GYMNOSPERMIA. 
COROLLIFLOR2. LAMIACE. 
NEPETA. (Carmint.) 
Generic Character. Calyx tubular, with about fifteen ribs, 
five-toothed. Corolla with the tube growing beyond the calyx. 
NeEprTa CaTaRIA. Catmint. <A very pretty though not 
very common plant, requiring a chalky or. gravelly soil. 
The stem is two or three feet high, very downy, as well as 
the heart-shaped leaves, and whitish. Flowers very many, 
together in the whorls, white, tinged and spotted with rose- 
colour. Stamens red. 
DIDYNAMIA. GYMNOSPERMIA. 
COROLLIFLOR. LAMIACEA. 
PRUNELLA. (SELF-HBAL.) 
Generic Character. Calyx ovate, upper lip three-toothed, lower 
one divided into two, the lips closing over the fruit. Corolla with 
the upper lip nearly entire, and arched, lower one three-lobed. 
PRUNELLA vuLGARIS. Se/f-heal. Common in moist and 
barren pastures, growing close on the ground, leaves oblong, 
and stalked. Flowers violet-blue, very thickly whorled, so 
as to form an oblong spike, with a pair of leaves at the base, 
