264 IvABIATAE 



Filaments straight, often spreading. 

 Calyx-tube 15-nerved. 23. Hyssopus. 



Calyx-tube ia-13-nerved. 

 Anther-bearing stamens 4. 

 Anther-sacs divergent. 

 Calyx equally 5-lobed : erect herbs. 24. Origanum. 

 Calyx 2-lipped : creeping herbs. 25. Thymus. 



Anther-sacs parallel. 26. Koellia. 



Anther-bearing stamens 2. 27. Cunila. 



Corolla regular with 4-5 teeth. 

 Anther-bearing stamens 2 : foliage not aromatic. 



28. LYCQPtrs. 

 Anther-bearing stamens 4 : foliage aromatic. 29. Mentha. 

 b. Flowers in loose terminal panicles. 

 I,ower lip of corolla fringed : native species. 30. Collinsonia. 



I,ower lip of corolla not fringed : naturalized species. 



31. Perilla. 



1. TEUCRIUM L.i 



Calyx canescent, the upper lobes obtuse. 1. T. Canadense. 



Calyx villous, the upper lobes acutish. 2. T. occidentale. 



1. Teucrium Canadense L. American Germander or Wood Sage. 

 (Man. p. 782 ; I. F. _/ 3070.) In moist thickets or along marshes, N. B. 

 to Man., Pla., Kans., Tex. and Mex. — Pennsylvania: Pike; North- 

 ampton ; Bucks ; Dbi,aware ; Chester ; I/Ancaster ; Frankwn ; Lu- 

 zerne ; Huntingdon ; Ali-EGheny. 



2. Teucrium occidentale A. Gray. Hairy GERMANDER. (Man. p. 

 782 ; I. F./. 3071.) In moist soil, Ont. to Pa., B. C, Kans., N. Mex. and 

 Calif. — Pennsylvania : Phii,adEi,phia. 



2. ISANTHUS Michx. 



1. laanthus bracheatus (Iv.) B.S.P. False Pennyroyal. (Man. 

 p. 782; I. F. /. 307?.) In sandy soil, especially along streams, Quebec 

 and Ont. to Minn., Kans., Ga. and Tex. — Pennsylvania : Bucks; Phila- 

 delphia ; Lancaster ; Dauphin ; Franklin ; Lebanon ; Hunting- 

 don ; Allegheny. 



3. TRICHOSTEMA L. 



Foliage viscid-pubescent : leaf -blades of an oblong or lanceolate type. 



1. T. dichotomum. 

 Foliage glabrous or merely puberulent : leaf-blades of a linear type. 



2. T. lineare. 



1. Trlchostema dichotomum L. Blue Curls. Bastard Penny- 

 royal- (Man. p. 782; I. F. /. 3073.) In dry fields, Me. to Fla., Pa., 

 Ky. and Tex. — Pennsylvania : Monroe ; Northampton; Bucks ; Phil- 

 adelphia ; Delaware ; Chester ; Lancaster ; York ; Franklin ; 

 Luzerne ; Allegheny ; Erie. 



2. Trichostema lineare Nutt. Narrow-leaved Blue Curls. (Man. 

 p. 783 ; I. F. f. 3074.) In sandy fields and dry pine barrens, R. I. to Ga. 

 and La. — Pennsylvania: Philadelphia, on Schuylkill. 



