1254 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Shrub or small tree, 2.5 to 7 meters high ; leaves opposite, petiolate, ovate 

 or oblong-ovate, 5 to 15 cm. long, acuminate, acute to rounded at base, entire, 

 glabrate above, beneath tomentulose or glabrate; cymes in terminal panicles; 

 calyx about 4 mm. long, obtusely 4-dentate ; corolla ^Yhite, glabrous, 10 to 

 12 mm. long, the tube ampliate above; fruit drupaceous, yellow, 6 to 8 mm. 

 in d'ameter, the calyx persistent and cuplike at its base. 



147. MENTHACEAE. Mint Eamily. 



Shrubs or small trees or often herbs, usually aromatic ; stems commonly 

 quadrangular ; leaves opposite or verticillate, simple ; flowers perfect, ir- 

 regular, small or large; calyx inferior, persistent, gamosepalous, 5-dentate or 

 bilabiate ; corolla gamopetalous, the limb 5-lobate or 4-lobate, usually bilabiate ; 

 stamens 4 or 2, attached to the corolla tube ; style filiform, usually bifid at 

 apex ; fruit commonly of 4 small 1-seeded nutlets. 



The family is often known by the name LaMatae. Several genera are 

 represented in Mexico only by herbaceous species. 



Fertile stamens 2. 

 Anther cells linear. 



Upper lip of corolla spreading 1. EAMONA. 



Upper lip of corolla erect 2. SALVIA. 



Anther cells oblong. 



Stamens distant, straight 3. CUNILA. 



Stamens ascending, converging, usually arcuate 4. POLIOMINTHA. 



Fertile stamens 4. 

 Calyx closed after anthesis. 



Calyx gibbous, not inflated 5. SCUTELLARIA. 



Calyx not gibbous, inflated 6. SALAZARIA. 



Calyx open after anthesis. 



Upper lip of the calyx decurrent upon the tube_,^ 7. OCIMUM. 



Upper lip of the calyx not decurrent. 



Nutlets rugose-reticulate 8. TRICHOSTEMA. 



Nutlets smooth or granular. 



Calyx bilabiate 9. CLINOPODIUM. 



Calyx not bilabiate, the 5 teeth equal or nearly so. 



Stamens declined toward the lower lip of the corolla. 



10. HYPTIS. 

 Stamens not declined. 



Flowers in a terminal head 11. MONARDELLA. 



Flowers chiefly axillary, or in terminal racemes. 



Leaves hastate; calyx campulate 12. SPHACELE, 



Leaves not hastate; calyx tubular 13. GARDOQUIA. 



1. RAMONA Greene, Pittonia 2: 235. 1892. 



Low shrubs ; leaves entire or crenate ; flower clusters in interrupted spikes 

 or sometimes paniculate; calyx bilabiate, the posterior lip entire or minutely 

 3-dentate, the anterior lip bifid ; corolla tube equaling or longer than the 

 calyx, the limb bilabiate ; perfect stamens 2. 



Bracts scarious-membranaceous, colored. 



Leaves entire 1. R. pachystachya. 



Leaves crenulate 2. R. capitata. 



