342 LABIAT.E. (mint FAMILY.^ 



Tribe I. A JUGOIDF:.^. Stamens 4, a.-icendin); (curved upwards) and parallel, usually 

 projecting from the notch of the upper side of thf (not evidently 2-Iipped) 5-lobcd corolla. 

 Nutlets reticulated and pitted, obliquely attoched by the inside near the base. 



* Lobes of the corolla all declined (turned forwards) : stamens exserted. 



1. Teui-rluin. Lower lobe of the corolla much larger than the others. Cal.. x 5 toothed. 



2. Ti'lchosttriiiR. Lobes of the corolla scarcely unequal. Calyx 5-cleft, oblique. 



• * Lobes of the corolla almost equally spreading : stamens nearly included. 



3. liiaiit lilts. Calyx bell-shaped, 5-cleft, almost equalling the small corolla. 



Tribe II. SATi:UEIE.^. Stamens 4. the inferior pair longer, or onl.; 2, dist;int, 

 straight, diverging, or converging under the upper lip : anthers 2 celled. Lobes of the 

 corolla flat aud spreading. 

 • Corolla not evidently 2-lipped, but almost equally 4-lobed, small. Stamens erect, distant. 



4. Mentha, Fertile stamens 4, nearly equal. 



5. Lycopus. Fertile stamens 2 ; and often 2 sterile filaments without anthers. 



* * Corolla more or less 2-lipped ; the tube naked (not bearded) within. 



■I- Stamens only 2, distjint : no rudiments of the upper pair. 



6. Caulla. Calyx very hairy in the throat, equally 5-toothed. Corolla small. 



H- 4- Stamens 4, all with anthers. 



7. Ilyssopus. Calyx tubular, 15-nerved, naked in the throat, equally 5-toothed. Sta- 



mens exserted, diverging. 



8. Pyciiaiitlieiiiiint. Cal>x ovate or short-tubular, 10-13ncrved, naked in the throat, 



equally 5-toothed or somewhat 2-lipped. Flowers in dense heads or dusters. 



9. OriKniiuiii. Calyx ovate-bell-shaped, hairy in the throat, 13 nerved, 5-toothed. Sta- 



mens diverging. Flowers spiked, and with large colored bracts. 



10. Thymus. Calyx ovate, nodding in fruit, hairy in the throat, 10- 13-nerved, 2-lipped. 



Stamens distant. Bracts minute. Leaves very small. 



11. Sntiireiu. Calyx bell-shaped, naked in the throat, 10-nerved, equally 5-toothed. Sta- 



nicn.s somewhat ascending. 

 12 Calainintho. Calyx tubular, often liairy in the throat, 13-nerved, 2-lipped. Tu,be of 

 the corolla straight. Stamens connivent at the suniniit in pairs under the upper lip. 



13. Melissa. Calyx tubular-bell-shaped, 2-lipped, flatti.sh on the upper side. Tube of the 



corolla curved upwards. Stamens curved above, connivent under the erect upper lip. 

 4_ ^_ ^_ Stamens only 2 with anthers, aj^ccnding, and a pair of small sterile filaments. 



14. Iledeoina. Calyx gibbous on the lower side, hairy in the throat. Flower.-< loose. 



» » « Corolla 2-lipped and with a bearded ring inside at the bottom of the enlarged throat. 



15. Colliiisuiiia. Calyx enlarged and declined in fruit, 2-lipped. Lower lobe of the co- 



rolla much larger than the other four. Stamens 2 or 4, long, diverging. 



Tribe III. MON.\RDP3.E. Stamens 2 (.sometimes hIso with mere rudiments of the 

 upper pair), ascending and parallel : anthers either apparently or really 1-ceIled. Corolla 

 2-lipped. 



16. Salvia. Calyx 2-lipped. Anthers with a long connective astride the filament, bearing 



a linear cell at the upper end, and none or an imperfect cell on the lower. 



17. MnilRi-dn. Calyx tubular and elongated, equally 5-toothcd. Anthers of 2 cells con- 



fluent into one ; the connective inconspicuous. 



18. BlephlPn, Calyx ovate-tubular, 2-lipped .Anthers as in the preceding. 



Tribe IV. WEPETE.^. Stamens 4, the superior (inner) pair longer than the inferior! 

 a.<cendiiig or diverging. Corollb, 2-lippcd ; the U|>per lip concave or arched, the lower 

 spreading. Calyx mostly 15-nerved. 



19. Lophnnthns. Stamens divergent; the upper pnir curved downwards ; the lower aa- 



cending: anther cells nearly parallel. 



20. ]Kepeta. Stamens all ascending ; the anthers approximate in pairs ; the cells at length 



widely diverging. Calyx more or less currad. 



