264 LABIATAE 



Filaments straight, often spreading. 



Calyx-tube i5-ner\-ed. 23. Hyssopus. 



Calyx-tube io-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. Lycopus. 

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

 b. Flowers in loose terminal panicles. 

 Lower lip of corolla fringed : native species. 30. Collinsonia. 



Lower lip of corolla not fringed : naturalized species. 



31. Perilla. 



1. TEUCRIUM L. 



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



Calyx villous, the upper lobes acutish. 2. T. oc.cidenlale. 



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

 (Man. p. 782 ; I. F. f. 30J0.) In moist thickets or along marshes, N. B. 

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

 ampton ; Bucks ; Delaware ; Chester ; Lancaster ; Franklin ; Lu- 

 zerne ; Huntingdon ; Allegheny'. 



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

 782 ; I. F./. 30JI.) In moist soil, Ont. to Pa., B. C, Kans., N. Mex. and 

 Calif. — Pennsylvania : Philadelphia. 



2. ISANTHUS Michx. 



1. Isanthus bracheatus (L. ) B.S.P. False Pennyroyal. (Man. 

 p. 782 ; I. F. /. 30/2. ) 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. Trichostema dichotomum L. Blue Curls. Bastard Penny'- 

 ROYAL. (Man. p. 782: I. F. /. 3073.) In dry fields. Me. to Fla., Pa., 

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

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

 Luzerne ; Allegheny ; Erie. 



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

 p. 7S3 ; I. F. f. 3074.) In sandy fields and dry pine barrens, R. I. to Ga. 

 and La. — Pennsylvania : Philadelphia, on Schuylkill. 



