612 



LABIAT.E. (MINT FAMILY.) 



Tribe 1. liAVANI>Ul.l!:.E. Stamens 4, declined, included. Anthers confluent, 

 J-celled. 



I.LAVANDULA. 2^ A Pubescent or canesccnt plants witli spiked inflorescence. 



Tribe II. SATl'RIE/E. .'Stamens 4 or 2, equal or the anterior longer, distant, di- 

 vergent or ajcendin?. Anthers w itii G, parallel or divergent cells. Calyx (in ours) 5-10-13 

 nerred. 



* Corolla -i-tootJicd, scarcely if at all bilabiate. 



2. MENTHA. 2^ Flowers condensed into a terminal spike or head. 



3. LYCOPUS. 2f Flowers in globular, axillaiy, distant clusters. 



* * Corolla bilabiate. 



4. OKIGANUM. ^ 21 Spikes ovate or oblong, with imbricated scales. CHlyx 5-toothed. 



5. TIIYMUS. ^ 2L Whorls interrupted or the terminal capitate. Calyx bilabiate. 



6. SATUEEIA. 2^ 5 ^^''^"^'^ axillary or the terminal spiked. Calyx 5-tootbed. 



7. MICEOMEEIA. 2( 5 ^'yn^es axillary, more or less distant. Calyx small, 5-tootbed. 



8. TIIYMBEA. ^ Whorls crowded in a terminal spike. Calyx flattened, 2-edged. 



9. CALAMINTHA. 1^0 AVhorls axillary, few- oo -flowered. Calyx tubular or slightly 



flattened at upper surface. Corolla-tube straight. 



10. MELISSA. 2( Cymes axillary, few-flowered. Calyx slightly flattened at upper sur- 



face. Corolla-tube recurved-ascending. 

 Tribe IIL ITIONARDE^, Terfect stamens 2, anterior. 



* Cells of anther with a long connective. 



11. SALVIA. If ^ Connective astride the filament. Inflorescence whorled. 



(Fig. 276, g). 



12. IIOSMARINUS. ^ Connective continuous with the lllament. Filament witli a small, 



reflexed tooth below middle. Inflorescence in axillary racemes. 



* * Anther-eclls with a short connective. 



13 ZIZYPHOUA. If ^ Sterile filaments with 2, empty anther-cells or 0. 



Tribe IV. NEPETE-S]. Perfect stamens 4, under the upper lip, the posterior pair 

 longer. Anther-cells divaricating. Calyx generally 15-nerved. 



14. NEPETA. 2f Upper lip of corolla flat. 



15. LALLEMANTIA. (|) Upper lip of corolla concave, with two folds witliin {>aral- 



lel with margin. 



Tribe V. STACHYDEiE. Perfect stamens 4, under tlie upper lip, the anterior 

 pair longer, or all enclosed in the tube, (^alyx 5-10-nerved. Nutlets dry. 



* Fruiting calyx closed by its incumbent lips. 

 IG, SCUTELLARIA. 2f Caly.\-lips entire, the upper furnished with a .-^cale. (Fig. 27G, r, d). 



17. BRUNELLA. 2f Upper calyx-lip 3-toothed, lower bifid. 



* * Fruiting eahjx ojtcn. . Stamens and style included in corolla-tube. 



18. SIDERITIS. 2f Calyx with 5, usually spiny teeth ; the floral leaves in the annual 



species similar to the others, spreading or reflexed, in the perennial difl'er- 

 ent, forming an involucre to the whorls. 



19. MAIUIUBIUM. 2f ^'^h'^ with 5-10, spinulous, mucronate or muticous teeth ; 



the floral leaves conformed, spreading or reflexed. 

 * * * Fruiting calyx open. Stamens more or less ezsertedfrom tube. 



20. STACIIYS.. If 5 Calyx with equal or oblique, 5-toothed mouth. Nutlet.* round- 



ed at tip. 



