4 BRITISH EUPHBASI.B 



• — Stem short, 3-10 cm. high, lower leaves broad 

 with a very obtuse terminal tooth which is 

 broader than long 13. 



12. Stem pale brown, simple or with a few branches 



above the middle, and occasionally with 



1-2 rudimentarj^ ones below it 9. E. siiecica. 



— Stem branched lower, branches usually more 



numerous, longer and stouter, internodes [^suheglandulosa. 

 not so long E. hrevijjila var. 



13. Foliage very hairy, hairs of stem long 6. E. latifolia. 



— Foliage nearly glabrous 7. E.foulaensis, 



11-. Stem normally much branched, tall, branches 



often com])ound, internodes usually long; 

 leaves at the base of the principal branches 

 patent or deflexed, longer than the bracts... 15. 



— Stem simj^le or with a few, rarely many, 



branches ; leaves and bracts small 16. 



1 5. Eglandular ; foliage glabrous 11 . E. nemorosa. 



Foliage sparingly setulose E. nemorosa 



[var. ciliaia. 



Stem shorter with short internodes E. nemorosa 



(Compare subglabrous forms of E. curia [f. comjpacta. 

 approaching E. nemorosa?) 



• — Glandular 12. E.campestris, 



16. Stem 5-20 cm. high, internodes usually long, 



bracts with acute teeth 17. 



— Stem 3-6 cm. high, rareh^ more, internodes 



usually short ; leaves and bracts very small, 



with 1-3 obtuse teeth on each side 19. 



17. Corolla rather large and conspicuous, violet ; 



flowers and leaves few ; leaves and bracts 

 larger than in E. gracilis, often patent; 

 stem simple or slightly branched above... ... [5. E. c<erulea.'] 



— Corolla small, dark violet or lilac and white ; 



flowers and leaves more numerous ; leaves 



and bracts smaller 18. 



18. Stem wiry, slender, dark purple., simple or 



with a few, rarely manj^, erect branches 

 about the middle ; corolla small, often dark 

 violet ; leaves and bracts small, often 



nigrescent 13. E. gracilis. 



Corolla larger, blue E. gracilis 



— Stem paler, sim))le or with 1 or 2 branches, [var. primaria. 



rarely more ; corolla white or lilac and 

 white; foliage greener; bracts usually 

 larger; flowering spike broader at the top. 

 (C(mii)are mountain forms of E. carta with 



long internodes. j 14. E. scoiica. 



1!>. <'<'r(. 11a yellow or violet and yellow 15. E. minima. 



Corolla white or lilar and white 20. 



