10. 



11. 



URITISH EUP1IRASI.B 3 



Corolla large, 10-15 mm. long 2. 



Corolla smaller, but plant with long glandular 



hairs 22. 



Corolla small, 4-10 mm. long 4, 



Corolla-tube not elongating at the end of the 



flowering 3_ 



Corolla-tube elongating at the end of the 



flowering ; corolla brightly coloured 21. 



Bracts with short, straight glandular hairs ... 8. U. brevipila 

 Bracts eglandular (in the British plant), [f. grandijiora. 



foliage densely hairy 6. il Z« tifolia 



Fruiting-spike + stout, dense, or, if lax, long [f. grandijiora. 



and occupying the greater part of the stem ; 



stem simple or branched at or below the 



middle ; bracts usually large 5. 



Fruiting-spike more slender, lax, rarely dense ; 



stem branching higher ; internodes long, 



rarely short 14. 



Fruiting-spike occupying the greater part of 



the stem or at least half its length 6. 



Fruiting-spike shorter, seldom exceeding half 



the length of the stem • 10. 



Bracts eglandular 7. 



Bracts glandular 9. 



Teeth of upper bracts ovate or triangular, sub- 

 obtuse ; foliage coriaceous, dark green 2. E. borealis. 



Teeth of upper bracts lanceolate or subulate, 



acute 8. 



Stem usually 10-20 cm. high, teeth of upper 



bracts subulate, aristate ; foliage green ... 1. E. stricta. 

 Stem seldom exceeding 10 cm., much branched 



or nearly simple, teeth of upper bracts 



lanceolate, acute or subaristate ; foliage 



hairy 4. JE. curta. 



Foliage less hairy E. curta var. 



Stem 4-8 cm. high with few or many branches ; S^glabrescens. 



fruitmg-spike rather stout ; glandular hairs 



not numerous 3. E. occiden- 



Plant small, 1-2 cm. high and broad, rarely [talis. 



more ; glandular hairs sometimes very 



few ; flowering early E. occiden- 



Stem 5-25 cm. high, simple or with a few [talis var. 



branches ; flowers larger, usually violet ; [pracox. 



glandular hairs very numerous . . .*. JO. E. Vigursii. 



Foliage pale green ; bracts with narrower 



more acute teeth ; flowers lilac and white . E. Vigursii 



Bracts large, with short glandular hairs ; stem [var. pallens. 



10-30 cm. high, lower internodes long 8. E. hrevipila. 



Bracts without glandular hairs 11, 



Stem tall, 10-25 cm. or more high, internodes 



very long 12. 



