244 MINT FAMILY. 



6. COLEUS. Calyx a in No. 4. Corolla similar, but the lower lobe longer and 

 concave or boat-shaped, enclosing tin- stamens ami style: filaments monadel- 

 phon-. 



6. HYP IIS. Calyx with 5 less unequal or equal teeth. Corolla of 4 short -imi- 



lar upper lobes, and a longer abruptly deflexed saccate lower one; filaments 

 separate. 



7. LAN AXDULA. Calyx not deflexed, 13-15-nerved, 5-toothed, the upper tooth 



mostly larger. Corolla with tube longer than the calyx, regularly 2-lipped, 

 i. e. upper lip 2-lobed, lower 3-lobed, the lobes all equally spreading. Sta- 

 mens included, but declined towards the lower lobe of the corolla. 



3. Stamens 4 (and the lower or outer pair longest) or 2, straight and distant or 

 dicerging : anthers plainly 2-i-elled, not < onniring in p-iirs. Lubes of the 

 corolla flat and spreading, or the upper erect but not arclitd. 



* Corolla short and rather bell-shaped, hardly if at all 2-lipped, the 4 or rarely 5 



lobes nearly equal and all spreading. 



3. PERILLA. Calyx in flower 5-clcft, in fruit nodding and enlarging, becoming 



2-lipped. Corolla 5-clel't, the lower lobe a little longer. Stamens 4, nearly 



equal. Style deeply 2-ck'ft. 

 9. MENTHA. Calyx equally 5-toothed. Corolla with a 4-cleft border, the upper 



lobe a little broader and sometimes notched at the end. Stamens 4, nearlv 



equal, similar. 



10. LYCOPUS. Calyx 4 -5-toothed. Corolla with 4 about equal lobes. Stamens 



2: the upper pair, if any, without anthers. 



* # Corolla evidently 2-lipped, but all the lobes of nearly equal length, the ripper lip 



erect and mostly notched, the lower spreading and 3-c.leJt, the tube not bearded 

 within : stamens with anthers otdy 2. 



11. CUNILA. Calyx equally 5-toothed, striate, very hairy in the throat, one half 



shorter than the corolla. Stamens 2, long and protruding: no rudiments of 

 the other pair. 



12. HEDEOMA. Calyx 2-lipped, gibbons on the lower side near the base, hairy 



in the throat. Corolla short. Stamens 2, with anthers scarcely protrudeo, 

 and 2 sterile short filaments tipped with a little head in place of anther. 



* * * Corolla elongated and irregular : the lower lobe or lip much the larger, pen- 



denl, cut-toothed or fringed, the 4 oth< rs uvarlii n/>ml n,l alike: tube with a 

 bearded ring inside at the bottom of the enlarged throat : stamens 2 icith 

 anthers or rarely 4. 



13. COLUNSON'IA. Calyx ovate, enlarging and turned down after flowerine, 



2-lipped, the upper lip Hat and 3-toothed, the lower 2-cleft. Cells of the an- 

 ther diverging. 



* * * * Corolla evidently 2-lipped, short, the upper lip erect or somewhat spread- 



ing and nearly entire or notched, the lower spreading or 3-clcft : stantens irith 

 anthers 4. 



14. HYSSOITS. Calyx tubular, 15-nerved, equally :>-toothod. naked in the throat. 



Cnrnlla with the miildle lobe of the lower lip larger and 2-cleft. Stamens 

 very long and protruding. 



15. PYCNAN I'lIKMl'M. Calyx oblong OT short-tubular, about i:i-nerved, equally 



5-toothed or somewhat 2-lipped, naked in the throat. Corolla with the lobe's 

 of the lower lip ovate and entire. Flowers crowded in ln'inU o,' close cyine> 



16. ORIGANl'.M. Calyx hairy in the throat, about 13-nervd. Lower lip of the 



corolla of U similar lohe^. I-'lowrr- crowded into spike-like clusters and fur- 

 nished with imbricated often colored braet-. 



17. THYMl'S. Calyx ..vale, hairy in the throat. M-nerved, 2-lipped; the upper 



lip 3-toothed and spreading, the lower deft into 2 awl-*haped ciliate lobes. 

 Corolla not strongly 2-lipped, the upper lip re^rniblini; the :i loliooi the h.wer 

 lip but notched at the apex. Stamens mostly protruding. 



18. SATUREIA. Calyx bell-vhap,.,!, naked in 'the throat, lO-ncrved, e.|iially 



6-tOOthed. Corolla with lower lip of :i nearly equal entire lobes. Stamen's 

 somewhat a-cending. Leaves narrow. 



4. Stamens 4 (the hirer or outer pair longer), ascending- or curved and irilh the 

 plainly 2-ccl/xl anlhtrs approximate or connirinr/ in pairs under the. erect and 

 Jlaltisn but not arched upper lip. Calyx more or less 2-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. 



