184 Rhodora ) [OcToBER 
C. Corolla deep brownish-purple or chocolate-color: nodes below the 
head 4-9. 
Leaves glabrous: nodes below the head 4-7...... 2. O. Williamsii. 
Leaves pubescent: nodes below the head 5-9. 
(2.) E. Williamsii, var. vestita. 
B. Inflorescence becoming loose and elongate, siti or capsules scat- 
tered, the mature spike with many remote D. 
D. Leaves glabrous on both surfaces: setsite sens purple to cream- 
IDE sans ne oa <n oo kaa) Od ods as REEDED teks 3. E. purpurea. 
D. Leaves pubescent on both surfaces. 
Leaves sparingly crisp-pubescent on both surfaces, the primary 
ones ai mm. long: corolla deep purple (rarely whitish) with 
Wasi Hina (3.) E. purpurea, var. Randit. 
Leaves ia densely pubescent, the primary ones 2-7 mm. long: 
corolla whitish (rarely purple) 
(3.). E: purpurea, var. Farlowit. 
Upper lip of corolla plainly bilobed; the lobes somewhat reflexed from 
the base (not revolute), truncate, and from undulate to coarsely 3-toothed: 
lower lip in larger forms fan-shaped, spreading and very conspicuous: 
flowers rather large, 4-10 mm. long: bracts with acute or acuminate, 
rarely obtuse, teeth. 
racts with acute or tue teeth: leaves pubescent. F. 
Infosec nearly capitate, in maturity with the 1-3 lower pairs 
of bracts remote: teeth of bracts obtuse: leaves very pubescent: 
corolla 56. WS IE ss eee pense 4. E. mollis. 
F. Inflorescence spicate, becoming loose and — teeth of bracts 
acute: leaves very pubescent to almost glabro 
Internodes long: inflorescence open, the st? bracts in maturity 
2-5 cm. apart: bracts spreading: corolla ree mm. long 
disjuncta., 
Internodes short: inflorescence dense above, the Tweet bracts in 
maturity 0.5-2 cm. apart: bracts ascending: — 5-7 mm. long 
6. E. arctica. 
E. Bracts with subulate or bristle-tipped teeth: leaves pubescent or gla- 
brous. G. : 
'G. Spikes comprising the larger _— of the plant, beginning near 
a: 
> 
H. Corolla 5-6.5 mm. long, w h pale-lavender or bluish lines; 
the lower lip with the ‘ee lobes not strongly spreading. 
Bracts oblong, pubescent: branches strongly : 
7. E. hudsomana. 
Bracts orbicular or broadly oval, glabrous: branches arcuate- 
ascending canadensis. 
OE OE Oe ER we Oe 0 URE ee 8 te eee 
wide-spreading lateral lobes. 
Bracts pote. Pee eS a sg 
Bracts pubescent.............- @) E. stricta, var. tatarica. 
