XCIII. LABIATiE. 



i 



FIG. 51.— 1. Monardadidyma. 2. An anther enlarged. 3. Flower of Galiopsis Tetrahit. 4. One of its 

 stamens, much enlarged. 5. The caly.x opened, showing the 4 achenia. 6. Flower of SaUia Sclarea. 

 8. Flower of Ocimum basilicum. 9. Flower of Nepeta Glechoma. 10. A pair of the anthers forming a 

 cross. 11. Flower of Physostegia Virginica seen from beneath. 12 One of its stamens. 13. The ovaries 

 with the rudimentary filament. 14. Flower of Teucrium Canadense. 15. Flower Nepeta Cataria. 

 16. One of its anthers. 17. Cunila Mariana. 18. A calyx and style. 



* Flowers diandrous. 



ConsjjecUis of the Genera. 



^ Bracts whitish. . Blephilia. 



^ Corolla not yellow. ( Bracts green. . . Hedeoma. 



( Connectile erect, short. \ Corolla yellow. Collinsonia. 



(bilabiate. I Connectile transverse, long ; anthers dimidiate Salvia. 



^ Herbs. . . . Cunila. 



^ Upper lip emarginate. ( Shrubs. . . . Rosinarinus. 



S Corolla bilabiate. I Upper lip linear, embracing the filament. . Monarda. 



subequal. ( Corolla subregular, 4-lobed Lycopus. 



* * Flowers didynamous. 



( Lips of calyx ^ Filaments simple. 



< toothed ■ • . \ Filaments forked. 



fTube of corolla < Stamens ascending. ' Lijis of the calyx entire. 



! exserted. . . . ^Stamens very long, arching the 5-cleft limb of corolla. 



Calyx 1 ^ Stamens scarcely exsert, 



bilabiate. LTube of the coroUa scarcely longer than calyx. I Stamens exserted. , 



( equal. 

 sj C Cal. 15-neiVed, I oblique 



"S ( Flowers < 



g ( Bracts < sjfcate. ( Calyx 10-nerved. . 



■eg \ green. ( Flowers capitate, involucrate. . 



S s f Corolla bilabiate. ( Bracts colored 



Stamens erect < Corolla limb of 4 subetpial lobes, one of them emarginate. . 



or divergent. ( Corolla limb of 5 equal lobes , 



J Calyx 5-ribbed. 

 f Leaves crenate. ^ Calyx 15-ribbed. 

 ; ^ Plants glabrous. 



- f included beneath 1 Leaves sharply serrate. I Plants hairy. 



j^ I Stamens as-< the upi)er lip. . . L Leaves entire, lance-linear and elliptic. 

 •g I cending and ( e.xserted through the fissure of the upper lip of corolla. . 

 2 i Upi)er lip of the corolla 2-lobed. 



2 , J Corolla not spurred. (Upper lip of the corolla 4-cleft. 



5 L Stamens declinafe. ^Corolla tube spurred 



( Leaves ( Lower lip of the corolla with 2 lateral teeth. 

 < undivided. n>ower lip of the cor. with lateral lobes refle.xed. 



^ Uhe teeth spinescent. ( Leaves mo.'^tly 3-l<)lied 



Ca yx 4-toothed. Upper pair of anthers ohering, half empty 



Calyx subenfire, very large, campanulate 



Calyx lOtoothed, the alternate teeth shorter 



Melissa. 20 



Prunella. 22 



Scutellaria. 21 

 Trichostemma. 35 

 Thymus. 13 



Orisanum. 12 

 Hijssopus. 16 



. Lophanthus. 24 

 Dracoccphalum. 25 

 Satvreja. 14 



Pycnanthemum.W 



Oriiranum. 



Mentha. 



Jsanthus. 



Lamitim. 



Nepeta. 



Phij-iostegia. 



Ballota. 



Micro7neria. 



Teucrium. 



Lni'andula. 



Ocimum. 



Plectranthus. 



Ga/eopsis. 



Stachijs. 



Leonurus. 



SyvMndra. 



Molucella. 



Marrubium. 



