MENTHA- 
253 
lower 3-lobed, middle lobe cordate. Cal. funnekhaped with 
5 equal teeth. Nuts convex and rounded at the end. 
*• Stcnnens falling short of the tube of the corolla. 
16. Markubium. Anther-cells diverging, bursting longitu- 
dinally. Upper lip of cor. straight, erect, flattish, cloven ; 
lower "3-lobed, middle lobe the largest. Cal. tubular ; teeth 
nearly equal or 2 longer. Kutsjlathj trwicate. 
Tr. VII. AJirGOIDHuE. Cor, with the upper lip very short, 
or deeply bitid and appearing as if wanting. 
17. Teucbium. Stam. parallel, proti'uded between the lobes 
of the upper lip of the cor., inferior longest ; cells bursting 
longitudinally. Cor. u-ith the tipper lip deeply lijicl, lobes 
Imu) ; lower lip 3-lobed. Cal. tubular, 5-toothed ; the teeth 
equal or the upper one larger (2-lipped). 
18. Ajuga. Stam. parallel, protraded far beyond the upper 
lip of the cor., infenor longest ; cells bursting longitudinally. 
Cor. with the upper lip vertj short, 2-lobed ; lower 3-lobed, 
much longer than the upper. Cal. ovate-bellshaped, nearly 
equally 5-cleft. 
Tribe I. Menthoidm. 
1. Men'tha Linn. Mint. 
* Throat of the calyx naked. General injlorescenee determinate. 
Fl. in spiked tohorls or terminal dusters. 
1. Jif. rotundifolia (L.) ; /. sessile roundly ovate crenate-serrate 
wrinkled shaggy beneath, spikes linear cyUndiical dense, bracts 
lanceolate, "fr.-cal. not contracted at the mouth." — E.B.4AQ. 
Sole Menth. 3.— Viscid. St. 1—2 ft. high. L. usually with a 
cordate base. Whorls of spike nearly all close together. Scent 
acrid.— Waste places, rare. P. WH. IX. Round-leaved Mint. 
E. S. I. 
2. M. sylves'tris (L.) ; I. stibsessile ovate or lanceolate serrate 
silky beneath, spikes linear-cylindrical dense, bracts subulate, 
" fr.-cal. contracted at the mouth."— £. 686. Sole 1 & 2.— 
L. sessile, rarely cordate below. Whorls of spike nearly all close 
together. Scent sweet. — a. L. lanceolate, acute, rather narrowed 
below. — /3. M. velutina (Lej.) ; 1. roundly cordate-oval. M. ro- 
tundifolia Sole 4.— Waste groimd in damp places. P. VIII. IX. 
Horse Mint. E. S. I. 
t3. 31. vir 'idis (L.) ; I. glabrous subsessile lanceolate acute 
serrate, spikes lax cylindrical, bracts subulate. — E. B. 2424. Sole 5. 
