LABIATE. (MINT FAMILY.) 293 



*■ 4- Stamens tscendlng or arcuate, nfton more or less converging tnd •ometlmet wneud- 

 ing parallel under the erect upper lip of the corolla ; anlhrr^ells obli.j.ie or dJvarlcaU : 

 calyx 12 to 1 j-nerved. 



6. Calamintba. Calyx oblong or tubular, often Kil>bous. bilabiate; the apjjer lip 



3-tuothed or 3-cleft, the lower 2-i.arted. Corolla with a htrai«ht l.ibe niontly tx- 

 ceeding the calyx, and a commonly enlarging throat Stamenn 4, ascending yunllel 

 under or beyond the upper lip, or conniving in pairs. 



7. Hedeoma. Calyx from tubular to oblong, usually giblwus, more or 1ch« hiUbiat« 



or unequally 5-toothed, mostly 13-striate. hairy or villous-lxanltd in th« thnal. 

 Antheriferous stamens 2, ascending parallel under the upper lip; the jwHterior pair 

 either none or sterile. 



Tribe III. Antheriferous stamens only 2, straight or commonly parallcl^wreniling : the 

 anther with narrow cells, which are either widely sejiarated on the uj-iwr and lower 

 ends of a linear or filiform connective, or the lower cell wanting or dcfonned, or the 

 two cells confluent into one linear cell : corolla bilabiate. — Monakdk/E. 



8. Salvia. Calyx bilabiate. Corolla with upi)er lijt erect, straight or falcate, usually 



concave;- the lower spreading, its middle lobe often emarginate. Connective com- 

 monly linear or filiform, transverse and articulated on the short filament 

 0. Monarda. Calyx elongated-tubular, mostly 15-nerved, regular or nearly so, almost 

 equally .^-toothed. Corolla with slender tube or dilateil at the throat; the ui.|.er lip 

 erect, entire or emarginate; the lower spreading, :<-l(ibpd, its middle lol>e larger or 

 longer, retuse or emarginate. Anther-cells contiguous and divaricate, more or le.H« 

 connate or confluent at their junction, so as to imitate a single linear cell. 



Tribe IV. Stamens 4, both pairs fertile; the posterior (inner or upper) pair surpns.sing 

 the anterior: corolla distinctly bilabiate: calyx usually 15-ner\'ed ; the upper teeth 

 or lii) commonly larger or longer. — Nepete.e. 



10. Liopbanthus. Stamens divergent or distant, exserted ; the upper i»air usually de- 



clined ; the lower or shorter pair ascending: the anther-cells jKiraliel or nearly so. 

 Corolla with tube not exceeding the oblique, 5-toothed calyx ; upi)er lip nearly erect. 

 2-!i>bp(l at the apex ; lower spreading, its broad middle lobe crcnate. 



11. Dracocephalum. Anthers more or less approximate in pairs ; their cells divaricate 



or divergent : filaments not exserted. Calyx equal at throat. 5-toothed ; the upper 

 tooth very much larger than the others. Corolla with dilated throat ; ujnter lip some- 

 what concave, emarginate or 2-lobed; lower spreading, with middle lol>e larg& 



Tribe V. Stamens 4, ascending and parallel ; the anterior (lower or outer) pair longer 



and with anthers mostly 1-celled by abortion; those of the posterior pair 2-celltHi: 



corolla bilaliiate ; but with the small lateral lobes more connected with the galcatc 



, upper lip; lower lip therefore of a single lobe: calyx bilabiate; its lijis entire.— 



SCUTELLARINR^. 



12. Scutellaria. CaljTC gibbous, with a crest-like or hump-shaped projection on the 



back, closed after the corolla falls, not inflated. Corolla with long exserted tube. 



Anthers ciliate pilose. 



Tribe VI. Stamens 4 ; parallel and ascending under the concave and commonly galMt<? 

 u]iper lip of the bilabiate corolla; the anterior (lower or outer) i>air longer : anthem 

 2-<pllpd or confluently somewhat 1-celled. Calyx 5 to 10-nerved, veiny. — STArnvnE.*. 



13. Physostegia. Calyx nearly regular, and equally 5-toothcd ; the tulw camiwnuUte 



or oblong, hardly nerved or veined, moderately inflated in fruit, t'omll.i gradually 

 inflated upward ; ujiper lip erect, roundcti, entire ; lower somewhat spreading, S- 

 parted, its roundish middle lobe emarginate. Filaments villous. Flowers simply 

 opposite in the spikes, one under each bract. 



14. Stacbys. Calyx tubular-campanulate or turbinate, 5 to 10-nerved, equally M'>otlicd. 



sometimes the upper tcetli larger. Corolla with cylindrical tulx*. not dilnto<l at 

 throat; upper lip erect, more or less concave, entire or emarginuto ; lower spreading. 

 3-lobed. Stamens more or less deflexed to the sides of the throat or coutorled aftet 

 anthesis : filaments naked : anthers approximate in pairs. 



