LABIATE. 87 



7. SCROPHULARIA. Cal. 5-lobed. Cor. subglobose; limb small, 

 of 2 short lips ; upper one 2-lobed, with a scale below and 

 within, lower one 3-lobed. Cap. 2-celled, 2-valved. 



8. DIGITALIS. Cal. of 5 leafy segments, unequal. Cor. large, 

 bell-shaped, oblique, 4 5-lobed. Cap. ovate, acuminate, 

 2-celled, many-seeded. 



9. ANTIRRHINUM. Cal. 5-partite. Cor. personate, gibbous at 

 the base, lower lip 3-cleft, with a projecting palate closing 

 the mouth. Capsule 2-celled, opening by 2 or 3 pores. 



10. LINARTA. Cal. 5-partite. Cor. personate, spurred; lower 

 lip 3-cleft; mouth closed by a projecting palate. Capsule 

 2-celled, opening by valves or teeth. 



ORD. 55. LABIATE. 



A. Stamens 2. 



1. LYCOPUS. Cal. tubular, 5-cleft. Cor. tubular, 4-cleft; limb 



nearly equal. St. diverging. 



B. Stamens 4, nearly equal. Corolla scarcely 2-lipped, shorter 

 than the stamens. 



2. MENTHA. Corolla nearly regular, tube scarcely longer than 



the calyx. 



3. THYMUS. Cal. 2-lipped, 10 13-ribbed. Cor. with the upper 



lip straight, lower one patent and trifid. Fl. whorled or 

 capitate. 



4. ORIGANUM. Cal. with 5 equal teeth, 10 13- veined; throat 



hairy. Cor. with the upper lip nearly straight ; lower patent- 

 3-cleft. Fl. in leafy spikes or heads. 



5. TEUCRIUM. Cal. tubular, nearly equal. Cor. with the upper 



lip bifid, apparently wanting ; lower one patent, 3-lobed. St. 

 much exserted from between the lobes of the upper lip. Fl. 

 yellowish white, in 1 -sided racemes. 



6. AJUGA. Cal. nearly equal, 5-cleft. Cor. with the upper lip 



very short or wanting, entire or emarginate ; lower one large, 

 trifid. St. much exserted. Fl. bright, blue in whorls. 



C. Stamens 4, didynamous. Corolla 2-lipped, upper one 

 longer, and arching over the stamens. 



f Calyx not 2-lipped. 



7. BALLOTA. Cal. funnel-shaped, with 5 broad mucronate teeth, 



10-ribbed. Cor. with the upper lip concave ; lower 3-lobed, 

 middle lobe largest, emarginate. 



8. LEONURUS. Cal. tubular, 5-toothed; teeth stiff, 2 lower ones 



rather the longest. Cor. with the upper lip nearly flat ; 

 lower with 3-blunt lobes. Achenes triquetrous. 



