208 DICOTYLEDONOUS. 



1 M VuLGARE. Stem erect, branching at the base, tomentose. Flowers 

 numerous, in whorls. Leaves roundish, ovate, rugose, dentate, tomentose 

 beneath. Calyx with 10 setaceous teeth. Corolla small. White Horehound. 

 White % Through the summer. Common around buildings. 



Remarks.— This plant is a tonic, and in large doses cathartic. It is decidedly a fa 

 mily medicine, and is used in tlie incipient stages of coughs and catarrhs with good 

 effects. It also derives celebrity from being extensively used in manufacturing the 

 Horehound candy. 



Genus XVI MACBRIDEA. 



Calyx turbinate, striate, 3-cleft, 2 of the segments large, 

 the other narrow. Corolla bilabiate, the upper lip entire, 

 the lower one 3-lobed. Anthers villous, fringed. 



1 M PuLCHRA. Stem erect, simple, glabrous, pubescent at the joints* 

 Leaves lanceolate, serrulate, slightly hairy on the upper surface, ciliate ; the 

 upper ones sessile, the lower ones on short petioles. Flowers in a whorl, brac- 

 teate Corolla with the lateral lobes obtuse, reflexed. 



White and purple. % August— Sept. Pine barrens. 1-2 ft. 



Genus XVII HEDEOMA. 



Calyx bilabiate, the upper lip with 2 subulate, ciliate seg- 

 ments ; the lower lip 3-cleft, segments lanceolate. Corolla 

 ringent. Stamens 2. 



1 H PuLEGioiDES. Stem pubescent, angular. Leaves lanceolate, serrate, 

 pubescent. Flowers on axillary peduncles, verticillate. Calyx hairy. 



Squaw Mint. Wild Penny Royal. 

 Pale purple. # July— Aug. Sandy soils. 6-10. 

 Remarks. — This plant is an aromatic stimulant, and like many of the plants of this 

 Order is used much in family practice. It is taken in hot infusion for producing per- 

 spiration. 



Genus XVIII CALAMINTHA. 



Calyx tubular, ribbed, glabrous, throat closed with hair af- 

 ter flowering. Corolla pubescent, with the throat inflated, 

 the upper lip emarginate, erect, the lower one 3-parted, with 

 the segments obtuse, nearly equal. Stamens 4. 



1 C Grandiflora. Stem slightly pubescent, terete. Leaves ovate, obtuse, 

 slightly toothed, glabrous. Flowers in opposite, dichotomous clusters. Sta- 

 mens shorter than the corolla. Anthers crescent shaped. 



Rose color spotted with purple. % .Tune — Aug. Middle Car. & Ga. 



Genus XIX PRUNELLA. 



Calyx with unequal lips, the upper one truncate, S-toothed. 

 Upper lip of the corolla dilated. Filament forked at the ex- 

 tremity one point bearing another. Stigma bifid. Stamens 4. 



1 P Vulgaris. Stem square, pubescent along the angles, hairy at the sum- 

 mit, branching at the base. Leaves oblong ovate, denticulate at the base, on 

 long hairy petioles Flowers in compact spikes, axillary and terminal. 

 Bracts ciliate. Calyx somewhat hairy, upper one 3-awned. Corolla with 

 the upper lip emarginate. Self heal, or healall. 



Violet. %. May— July. Common. 6-8 in. 



