MINT FAMILY 211 



of flowers dense. Calyx teeth hooked at the tip. Corolla | in. long, 

 white. Cultivated from Europe as an herb (used in preparation of 

 horehound candy) and somewhat naturalized. 



III. NEPETA L. 



Erect or prostrate herbs. Whorls of flowers axillary or ter- 

 minal ; flowers blue or white. Calyx tubular, 15-ribbed, 5- 

 toothed. Corolla tube slender below, dilated at the throat, 

 naked ; upper lip notched or 2-cleft ; lower lip 3-cleft, middle 

 lobe large. Stamens 4, ascending under the upper lip, the 

 upper pair longer. Lobes of the stigma awl-shaped. 



B. Fl. species 2 {GUcoma). 



1. N. Cataria L. Catnip. Stem grayish, downy, 2-3 ft. high, 

 branched, very leafy. Leaves large, ovate-heart-shaped, deeply scal- 

 loped, serrate, white and downy beneath. Corolla about \ in. long, 

 whitish with purple dots. Naturalized from Europe ; a common weed 

 about dooryards. 



2. N. hederacea Trevisan. Ground Ivy, Gill-over-the-Ground, 

 Creeping Charley, Crow Victuals, Robin Runaway. Creep- 

 ing. Leaves roundish, kidney-shaped, and crenate. Corolla bluish- 

 purple, three times as long as the calyx. Common in damp places 

 about houses and gardens. Naturalized from Europe. 



rV. PRUNELLA L. 



Perennials, with stems simple or nearly so, and sessile, 3- 

 fiowered flower clusters in the axils of kidney-shaped bracts, 

 the whole forming a spike or head. Calyx tubular-bell-shaped, 

 somewhat 10-ribbed; upper lip broad, 3-toothed, the teeth short j 

 lower lip with 2 longer teeth. Upper lip of the corolla upright,, 

 arched, and entire ; the lower spreading, reflexed, fringed, and 

 3-eleft. Stamens 4, reaching up under the upper lip, with the 

 tips of the filaments 2-toothed ; only one tooth anther-bearing- 



1. P. vulgaris L. Self-Heal, Healall, Carpenter Weed. 

 Leaves with petioles, ovate-oblong, either entire or toothed, often 

 somewhat hairy. Corolla usually blue or bluish, somewhat longer 

 than the brown-purple calyx. Open woods and fields everywhere. 



V. LAMIUM L. 



Annual or perennial hairy herbs. Calyx tubular-bell-shaped, 

 6-veined, with 5 awl-pointed teeth of nearly equal length. 



