XCIII. LABIATE. 



An anther enlarged. 3. Flower of Galiopsis Tetrahit. 4. One of its 



FIG. 51.— 1. Monardadidmia .. „_ _ __ _ _ , 



stamens, much -wnlarge^- K The (?al.vx opened, showing the 4 achenia. 6. Flower of Salvia Sclared. 

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

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

 with the rudimentary filament, u. 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. 



\ Bracts whitish. . Blephilia. 



, ,. - <) Corolla not yellow. \ Bi-acts green. . . Heileoma. 



S Connectile erect, short. \ Corolla yellow. CoUinsonia. 



f bilabiate. ^ Connectile transverse, long ; anthers dimidiate Sahna. 



I A-. 4 Herbs. . . . Cunila. 



< . , ^ Upper lip emarginate. ( Shrubs. . . . Kofiiiarinus. 



S CoBolla bilabiate. \ Upper lip linear, embracing the filament. . Monarda. 



Calyx Isubequal. J Corolla gubregular,-4-lobed Li/copus. 



18 



* * Flowers did3'namous. 



Melissa. 

 Prunella. 

 Scutellaria. 

 Trichostemma. 



i Lips of calyx S Filaments simple. 

 < toothed ■ ■ -i Filaments forked. 

 fTube of corolla \ Stamens ascending. ' Lips of the calj'x entire. 

 I e.xserted. . . . (Stamens very long, arching the 5-cleft limb of corolla. 



Calyx 1 . t ^ Stamens scarcely exsert. Thymus. 



bilabiate. L Tube of the corolla scarcely longer than caly.x. (Stamens exserted. , Origanum. 12 



<t equal. Hyssopvs. 15 



^ i Cal. 15-nerVed, ( oblique. Lophanthiis. 24 



■g ' ^ (Flowers-; Dracocephalum. ^ 



g , "^x. ( Bracts < .'spicate. ( Calyx 10-nerved. . . Satureja. 14 



■a 2 - ■; preen. ( Flowers capitate, involucrate. . Pycnatithemuin.W 



I 3 (torolkmlabiate. ( Bracts colored Orisranum. 12 



Q 2 estamenserect'' Corolla limbof4 subequal lobes, one ofthem emarginate. . Mentha. 4 



« S I or divergent. ( Corolla limb^f 5 equal lobes Isanthus. 5 



c -a ( f, Calyx 5-ribbed. . . Lamium. . 28 



5 ("c I I ■• C Leaves crenate. ( Calyx 15-ribbed. . . Nepeta. 23 



S 5 I ^ ■ i \ Plants glabrous. Phymstegia. 26 



>, I = ^ (includedBfffeathl Leaves sharply serrate. (Plants hairy. . Ballvta. 33 



-g I ^ Stamens as-< the upper lip.-. . (.Leaves entire, lance-linear and elliptic. . Microineria. 19 



= I -g cending and ( exserted through the fissure of the upper lip of corolla. . . Teucrizmi. 36 



■■ ■ t Upper lip of the corolla 2-lobed. Lavandula. 2 



( Corolla'not spurred. (Upper lip of the corolla 4-cleft. Ocimum. 1 



I Stamens declinate. (Corolla tube spurred Plectranthus. 3 



(Leaves .• (Lower lip of the corolla with 2 lateral teeth. Galeopsis. 30 



g < undi^^ded.»( Lower lip of the cor. with lateral lobes reflexed. SVnc/ij/s. 31 



o Uhe teeth gpinescent. ( Leaves mostly 3-lobed Leonurus. 29 



Calyx 4-toothed. Upper pair of anthers cohering, half empty Synandra. 27 



*-alyx subentire, very large, campanulate Mnlucella. 34 



Oalyx lOtoothftd, tiir, alternate teeth shortur Marruiiwn, 33 



