118 LAMIALES 



Calyx distinctly 2-lipped or the upper tooth larger than 

 the others. 

 Bracts pectinate with a^yn-pointed teeth. 



8. Drachocephalum. 

 Bracts merely ciliate, broadly ovate-orbicular. 



9. Prunella. 

 Corolla 4-lobed, nearly regular. 20. Mentha. 



Flowers in dense capitate clusters. 18. Koellia. 



Flowers in clusters in the axils of the leaves, not spicate. 



Leaves entire. ' 2. Isanthus. 



Leaves not entire. 



Calyx teeth usually 10. 4. Marubium. 



Calyx teeth 5. 



Corolla distinctly 2-lipped. 



Leaves much longer than broad. 11. Leonurus. 



Leaves about as broad as long, in our species. 

 Upper pair of stamens longer than the lower. 



7. Glecoma. 

 Upper pair of stamens shorter than the lower. 



12. Lamium. 

 Corolla nearly regular, leaves lanceolate. 20. Mentha. 



Anther bearing stamens 2. 



Flowers in terminal spikes or heads. 



Flowers in terminal spikes, composed of few-flowered clusters. 



14. Salvia. 

 Flowers in dense bracted glomerules, or these forming inter- 

 rupted spikes. 

 Calyx equally 5-toothed. . 15. Monarda. 



Calyx 2-lipped. 16. Blephilia. 



Flowers clustered in the axils of the leaves, not spicate. 



Calyx 13 nerved, 2-lipped. 17. Hedeoma. 



Calyx and corolla both nearly regular, 4-.5 lobed. 19. Lycopus. 



1. Teucrium. 781. 



Calyx canescent, at least 2 of the upper lobes obtuse, corolla 15-20 

 mm. long. 1. T. canadense. 



Calyx villous, some of the hairs glandular, upper calyx lobes acute, 

 corolla 8-12 mm. long. 2. T. occidentale. 



1. Teucrium canadense L. Amreican Germander, Wood Sage. 

 In low ground in the eastern part of the state. Knox County; Lin- 

 coln; Nebraska City; Red Cloud; Saunders County. 



2. Teucrium occidentale A. Gray. Hairy Germander. 

 Common in low moist ground, in the western part of the state. Alli- 

 ance; Endicott; Grand Rapids; Hooker County; Mead; Scotia; Scotts 

 Bluff County; Walton; Valentine. 



2. Isanthus. 782. 



1. Isanthus brachiatus (L.) B. S. P. 



Along streams in the southeastern part of the state. Cass County. 



