BRITISH EUPHRAST.B 5 



20. Stem simple, 3-6 cm. high, internodes of 



fmitiiig-spike long or short E. minima 



— Stem 2-5 cm. high, much branched, branches [var. nana. 



often compound E. minima 



21. Eglandular ; stem witli many, rarely few [var. arhuscula. 



branches ; leaves and bracts small, nearlv 



glabrous ^ 16. E. Kerneri. 



— Glandular ; gland-ti])])ed hairs long and flex- 



uous ; leaves and bracts larger, setulose ... 22. 



22. Stem with a few branches and long internodes ; 



spike relatively short ; flowers usually 



large \. 17. E. Rostko- 



— Stem simple or nearly so ; spike occupying [^viana. 



the greater part of the stem ; flowers 



smaller 18. E.fennica. 



Alternative Key. 



Bracts eglandular 1 . 



Bracts glandular 17. 



1. Upper cauline leaves, excluding the few patent 



teeth, at least twice as long as broad ; 

 capsule glabrous or with a few decumbent 

 hairs on the margin 19. E. salishurg- 



— Upper cauline leaves at most twice as long as [^ensis. 



broad ; capsule with erect hairs on the 



margin 2. 



2. Corolla large, 10-15 mm. long 3. 



— Corolla smaller, 4-10 mm. long 4. 



3. Corolla-tube elongating at the end of the 



flowering ; stem usually much branched ; 



bracts small, 5-6 mm. long 16. E. Kerneri. 



— Corolla-tube not elongating ; plant very hairy, [f. grandiflora. 



bracts 7-8 mm. long 6. E. latifolia 



4. Bracts 7-11 mm. long; fruiting-spike stout... 5. 



— Bracts 3-8 mm. long ; fruiting-spike more or 



less slender 10. 



5. Bracts 8-11 mm. long, stem tall with long 



internodes 6. 



— Bracts 7-9 nnn, long ; stem usually shorter, 



with short internodes 7. 



6. Stem pale brown, simj^le or with a few 



branches above the middle and occasionally 

 with 1-2 rudimentary ones below it, intei'- 

 nodes very long 9. E. suecica. 



— Stem branched lower, branches usually more 



numerous, longer and stouter, internodes 



not so long -£'• hrevipila var. 



7. Fruiting-spike long in proportion to the [^snheglauxlulosa. 



stem 8. 



