LABIATE. 281 



HAB. Dry hills and woods. Can to Car. July, Aug. ^. Stem 

 6 10 inches high, 4-sided, branched above. Flowers small, pale 

 purple. Pennyroyal. 



24. CLINOPODIUM. Linn. 



Involucre of many linear acuminate leafets placed under 

 the whorls of flowers. Upper lip of the corol erect, emargi- 

 nate ; lower one the largest, emarginate. 



Didynamia. Gymnospermia. 



C. vulgare Linn. ; leaves petiolate, ovate, subserrate, hairy ; whorls 



hairy, axillary and terminal ; pedicels branched ; bracts setaceous. 



HAB. Rocky woods. Can. and N. S. W. to Miss. July, Aug. 



24!. Stem 12 18 inches high. Flowers purple or rose coloured, 



in crowded whorls ; smell aromatic. Wild Basil. 



25. PRUNELLA. Linn. 



Upper lip of the calyx with 3 very short teeth. Filaments 

 forked at the extremity, one point bearing the anther. Stig- 

 ma bifid. Didynamia. Gymnospermia. 



P. vulgaris Linn. : leaves petiolate, oblong-ovate, toothed at base ; 

 lips of the calyx unequal ; the upper one truncate, 3-awned ; stem as- 

 cending. 



HAB. Meadows, Can. to Car, W, to Miss. June Aug. 2_(. 

 Stem 8 12 inches high, hairy. Flowers large, purple, dense* 

 ly whorled, so as to form an imbricated oblong spike. P.penn- 

 sylvanica of Willdeno w is a mere variety. Introduced. 



Se]f-heaL. 



26. SCUTELLARIA. Linn. 



Calyx bilabiate ; upper lip with a lid covering the seeds 

 like an operculum. Corol bilabiate ; upper lip concave ; low- 

 er 3-lobed, Didynamia. Gymnospermia 9 



* Flowers axillary, solitary. 



1. S. galcriculata Linn. : somewhat branched ; leaves cordate-lan- 

 ceolate, subsessile, crenate ; flowers axillary, solitary or in pairs ; ca- 

 lyx hairy. 



HAB. Near marshes. Can. and N. S. Aug. I[.-^Stem 1218 

 inches high. Flowers large, blue, pubescent. 



Common Skull-cap. 



2. S. gracilis Nutt. : stem mostly simple ; leaves remote, broad- 

 ovate, toothed, smooth and sessile, scabrous on the margin ; upper 

 ones smaller, entire ; flowers axillary. 



HAB. Shady rocks. Penn. S. to Louisiana. June. 21- Stem 

 12 18 inches high, slender, erect. Leaves opposite, remote, 

 sparingly toothed, veined. Flowers pale blue, axillary and op- 



24* 



