344 MINT FAMILY. 



15. 8ATUREIA. Calyx bell-shaped, 10-ner t ved, equallv 5-toothed. Corolla with lower lip 



of 8 nearly equal entire lobes. Stamens somewhat ascending. Leaves narrow. 



16. PYCNANTHEMUM. Calyx oblong or short-tubular, about 13-nerved, equally 5- 



toothed or somewhat 2-lipped. Corolla with the lobes of the lower lip ovate and 

 entire. Flowers crowded in heads or close cymes. 



= = Calyx hairy in the throat. 



17. ORIGANUM. Calyx about 13-nerved. Lower lip of the corolla of 3 similar lobes. 



Flowers crowded into spike-like clusters and furnished with imbricated, often colored 

 bracts. 



18. THYMUS. Calyx ovate, 13-nerved, 2-lipped ; the upper lip 8-toothed and spreading, 



the lower cleft into 2 awl-shaped ciliate lobes. Corolla not strongly 2-lipped, the 

 upper lip resembling the 3 lobes of the lower lip but notched at the apex. Stamens 

 mostly protruding. 



* * * * Stamens 4 (the lower or outer pair longer}, ascending or curved and with the 

 plainly 2-celled anthers approximate or conniving in pairs under the erect and 

 flattish but not arched upper lip. Calyx more or less ^-lipped. 



19. CALAMINTHA. Calyx not flattened. Corolla straight, with inflated throat, and 



2-lipped border, the spreading lower lip 3-parted, its middle lobe entire or slightly 

 notched. 



20. MELISSA. Calyx with 3-toothed upper lip flat. Corolla more or less curved and 



ascending. Filaments arching and bringing the anthers together in pairs. Other- 

 wise as in 19. 



***** Stamens only 2, parallel and ascending under the erect or somewhat scythe- 

 shaped entire or barely notched upper lip of the corolla ; anthers \-celled, either 

 strictly so or by confluence of the 2 cells end to end. 



+- Calyx naked in the throat and 2-lipped. 



21. 8ALVIA. Calyx with the upper lip 3-toothed or entire, the lower 2-cleft. Corolla 



deeply 2-lipped ; the lower lip spreading or hanging, 3-lobed, the middle lobe larger 

 and sometimes notched at the end. Filament as it were compound, the proper fila- 

 ment short and bearing on its apex an elongated thread-like or linear body (the con- 

 nective, in fact) attached by its middle, one end of which ascending under the upper 

 Hp bears a linear 1-celled anther, the other descending bears the other smaller and 

 imperfect cell, or a mere vestige of it, or is naked. Flowers usually large or showy. 



22. ROSMARINUS. Calyx and corolla nearly as in Saivia, but the lateral lobes of the 



lower lip of the corolla erect and somewhat contorted (as in some Salvias also). 

 Stamens resembling those of Monarda and protruded, but with a short tooth on the 

 filament below the middle. Shrub. 



28. BLEPHILIA. Calyx short-tubular, the upper lip with 3 awned, the lower with 2 

 nearly blunt teeth. Corolla with an expanded throat, bluish. Otherwise like 

 Monarda, but flowers smaller. 



+- -t- Calyx mostly hairy in the throat and nearly equally 5-toothed. 



24. MONARDA. Calyx tubular, elongated, many-nerved. Corolla deeply 2-lipped, narrow 



in the throat, the oblong or linear lips about equal in length, the lower 3-lobed at the 

 apex, its narrower middle lobe slightly notched. Stamens with long and staple 

 filament bearing directly on its apex a linear anther. Flowers rather large, numerous 

 in the whorl ed or terminal heads. 



****** Stamens 4, diverging or ascending ; the upper or inner pair longer. 

 Upper lip of the corolla erect or a little arching, the lower spreading. 



-- Stamens exserted. 



25. LOPHANTHUS. Calyx rather unequally 5-toothed. Upper lip of corolla slightly 2- 



lobed, the lower moderately spreading, its middle lobe somewhat crenate. Stamens 

 not parallel, the lower and shorter ones more or less ascending, the upper and longer 

 ones diverging and declining, so as to seem the lower. Tall erect herbs, with small 

 4wers clustered in panicled spikes. 



