XCIII. LABIATE. 



11 



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

 stamens, much enlarged. 5. The calyx opened, showing the 4 achenia. 6. Flower of Salvia 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. 



Conspectus of the Genera. 



* * Flowers didynamous. 



( Lips of calyx <, Filaments simple. Melissa. 20 



< toothed . . . \ Filaments forked. Prunella. 22 



("Tube of corolla < Stamens ascending. ( Lips of the calyx entire. . . Scutel/aria. 21 



I exserted. ... (Stamens very long, arching the 5-cleft limb of corolla. Trichostemma. 35 



Calyx (, Stamens scarcely exsert. Thymus. 13 



bilabiate. L Tube of the corolla scarcely longer than calyx. Stamens exserted. , Origanum. 12 



J equal. Hyssopus. 15 



( Cal. 15-nerVed, ( oblique. Lophanthus. 24 

 5 { Dracocephalum. 25 



Satureja. 14 



Pycnanthemum. \ l 



Flowers 



f Bracts < spicate. ( Calyx 10-nerved. . 

 < green. ' Flowers capitate, involucrate. 

 . ( Bracts colored 



Ill 



(Corolla bilabiate 



S f Stamens erect< Corolla limb of 4 subequal lobes, one of them emarginate. 



" or divergent. ( Corolla limb of 5 equal lobes 



$ Calyx 5-ribbed. . . 

 fLeaves crenate. (Calyx 15-ribbed. 

 J $ Plants glabrous. 



C included beneath j Leaves sharply serrate. ( Plants hairy. 

 Stamens as-< the upper lip. . . (.Leaves entire, lance-linear and elliptic. . 

 cending and ( exserted through I he fissure of the upper lip of corolla. . 



$ Upper lip of the corolla 2-!obed. 

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



Stamens declinate. ( Corolla tube spurred 



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



Origanum. 



Mentha: 



Isanthus. 



Lamium. 



Nepeta. 



Phyftostegia. 



Ballota. 



Microrneria. 



Teucrium. 



Lavandula. 



Ocimum. 



Plectranthus. 



Galeopsis. 



~3 . \ undivided. (Lower lip of ^the cor. with lateral lobes reflexed. Stachys. 



O Uhe teeth spinescent. ( Leaves mostly 3-lobed Leonurun. 



Calyx 4-toothed. Upper pair of anthers cohering, half empty Synandra. 



Calyx subentire, very large, campanulate Molucella. 



Calyx 10-toothed, the alternate teeth shorter. . . Marrubium. 



