-96- 



lla. Corolla scarlet Oswego Tea, Monarda didyma. 



lib. Corolla bright crimson or rose-red 



Wild Bergamot, Monarda fistulosa yar. rnbra. 



lie. Corolla white, pink, pale-purple, or yellowish 12. 



12a. Flower-clusters all terminal 13. 



12b. Flower-clusters both terminal and axillary 



Horse Mint, Monarda punctata* 



13a. Leaves and stem witli soft spreading pubescence 



Wild Berganiot, Monarda fistulosa. 

 13b. Leaves and stem grayish with fine appressed pubescence 



Wild Berganiot, Monarda mollis. 



14a. Upper calyx-teeth about 3 times as long as the lower 



Blephilia, Blephilia hirsuta. 



14b. Upper calyx-teeth but little longer than the lower 



Blephilia, Blephilia ciliata. 



15a. Calyx with a distinct protuberance on the back of the upper 



side (Skullcap) 16. 

 15b. Calyx without a distinct protuberance 20. 



16a. Corolla 5 8 mm. long; flowers in axillary racemes (3 8 

 dm. high; flowers blue, in summer) 



Mad-dog Skullcap, Scutellaria lateriflora. 



16b. Corolla 6 10 mm. long; flowers axillary, solitary (1 3 dm. 

 high; flowers violet, early summer) 



Skullcap, Scutellaria parvula. 



16c. Corolla 12 30 mm. long; flowers axillary or in terminal 

 racemes (4 8 dm. high; flowers blue, summer) 17. 



17a. Stem-leaves cordate Skullcap, Scutellaria yersicolor. 



17b. Stem-leaves not distinctly cordate 18. 



18a. Stem-leaves sessile or nearly so; plant of swamps and 

 riverbanks Skullcap, Scutellaria galericulata. 



18b. Stem-leaves with petioles 1 cm. or more long; plants of dry 

 or moist woods 19. 



19a. Stem glandular-pubescent toward the summit; corolla 16 mm. 

 long or less Skullcap, Scutellaria pilosa. 



19b. Stem not glandular; corolla 20 mm. long 



Skullcap, Scutellaria incana. 



20a. Calyx-teeth 5, all equal or nearly so at the time of flower- 

 ing 28. 



20b. Calyx-teeth 5, one of them different in size and shape from 

 the other four (2 6 dm. high; flowers light blue, summer) 



Dragon Head, Dracocephalum paryiflomm. 



20c. Calyx-teeth 5, two of them different in size and shape from 



the other three 21. 

 20d. Calyx-teeth 10, subulate (woolly plant 410 dm. high, with 



whitish flowers in axillary clusters in summer) 



Hoarhound, MarrnMum vulgare. 



