i 
4 
S Leaves serrate 
( 
/O Corolla 3-6 mm. long, scarcely 2- 
14 lipped, appearing equally 4-lobed q Mentha 
/O Corolla 8-15 mm. long, strongly 
dais 1 Sti the upper lip erect, 
/4% often concave, the lower spreading, 
\ 3-lobed 
/2 Stamens exserted 4-6 mn. Jo. Agastache 
— 
fz, Stamens included under the upper 
/@1ip or nearly so 
valyx upper middle lobe 
/4 ovate, 
225-35 mme broad, about twice as 
K large as the lower lobes; bracts 
Spinose on the margins /l, Moldavica 
/4 Calyx lobes subequal; bracts 
/§ not spinose 
/j Plants glabrous; calyx teeth 
Zo 1-1.5 mn. long ja, Dracocephalum 
— 
/@ Plants hirsute or tomentose; 
Lpcalyx teeth 2-4 mn. long 
/G anthers ciliate; middle lobe 
of lower lip deeply notched 
2244 and strongly narrowed at the 
\base » 3mm. broad jg, Lenium 
/g Amthers glabrous; middle lobe 
of lower lip entire or eroded 
22 but not deeply notched, 4-5 
\mme broad 
20 Lower lip of corolla with a 
dense hairy tuft; leaves ' 
a4 ovate, softly tomentose /#Xepeta 
Zo Lower lip of corolla glabrous; 
leaves oblong or oblong- 
AM epiane tis » hirsute 15, Stachys 
