(JG8 



LABIATE. 



38 MONARDE'LLA. Throat of calyx naked inside. Seg- 

 ments of corolla 5, oblong, or linear, somewhat bilabiately dis- 

 posed. 



39 AMAKA'CUS. Superior lip of calyx erect, entire : -lower 

 one truncate, almost wanting, or shortly bidentate. Spikelets 

 membranaceously bracteate. 



40 ORI'GANUM. Calyx somewhat equally 5-toothed ; throat 

 villous. Spikelets broadly bracteate, rather loose. 



41 MARJORA V NA. Limb of calyx cleft, quite entire above, 

 orbicular, with the margin implicate beneath at the base. 



42 THY V MUS. Calyx bilabiate : upper lip tridentate : lower 

 lip bifid ; throat villous. 



43 SATURE V IA. Calyx nearly equal ; throat almost naked in- 

 side. Superior lip of corolla ovate. Whorles of flowers axil- 

 lary, or aggregate into an oblong head. 



2. Fertile stamens 4. Calyx \5-nerved. 



44 HYSSOPUS. Character the same as that of the section. 



3. Two loner stamens alone fertile. 



45 COLLINSONIA. Lobes of corolla 4 : superior ones nearly 

 equal : lower one large, toothed or fringed. 



46 CUNI'LA. Corolla normal with the tribe. 



TRIBE V. 



MELISSI'NE.E. Calyx 13, rarely 10-nerved, 5-toothed, bila- 

 biate, , or rarely equal. Tube of corolla exannulate, usually 

 exserted ; limb bilabiate ; lips flat, or the upper one as in 

 Glechon, galeate. Stamens ascending : superior ones shorter, 

 or abortive. 



47 HEDEOMA. Tube of corolla rarely exserted. Throat of 

 calyx villous inside. Superior stamens abortive. 



48 MICROME'RIA. Tube of corolla rarely exserted. Calyx 

 nearly equal : superior stamens antheriferous. 



49 MELI'SSA. Calyx bilabiate : upper lip tridentate : lower 

 lip bidentate. Tube of corolla usually exserted. Superior 

 stamens antheriferous. 



50 GARDOQUIA. Calyx tubular, somewhat incurved, with an 

 equal or sub-bilabiate mouth. Tube of corolla much exserted. 

 Stamens 1-3, now and then sterile. 



51 GLE'CHON. Superior stamens abortive. Superior lip of 

 corolla galeate. 



52 KEI'THIA. Superior stamens altogether abortive. Lips 

 of corolla flat ; tube exserted. 



53 THY'MBRA. Calyx much compressed, flat above. Supe- 

 rior stamens antheriferous. 



54 DICERA'NDRA. Stamens 4, antheriferous ; anthers bical- 

 carate. 



55 POGO'GYNE. Stamens 4, antheriferous. Style villous. 



TRIBE VI. 

 SCUTELLARI'NE;E. Calyx bilabiate ; upper lip truncate, entire 



or somewhat tridentate. Tube of corolla exserted, ascending : 

 upper lip of limb arched, rarely flat. Stamens ascending : supe- 

 rior ones the shortest. 



1 . Gynophore equal, straight ; lips of calyx toothed. 



56 PRUNE'LLA. Style bifid at apex. 



57 CLONIA. Style quadrifid at apex. 



2. Gynophore elongated, incurved, oblique at apex. Lips 

 of calyx entire. 



58 SCUTELLA^RIA. Achenia naked. Superior lip of corolla 

 arched. 



59 PERITOMIA. Achenia membranously winged. Segments 

 of corolla flattish. 



TRIBE VII. 



PROSTANTHE'RE*. Calyx campanulate, sometimes bilabiate ; 

 lips flat, entire, or the lower one bidentate or bifid ; throat 

 naked inside. Corolla with a short ample tube, a campanulate 

 throat, and a bilabiate limb : lips flattish. Stamens 4, didyna- 

 mous, shorter than the corolla : lower ones sometimes longer, 

 and sometimes sterile. Achenia coriaceous, reticulately wrin- 

 kled. Style permanent. 



1 . Calyx bilabiate : lips entire, or the lower one is bifid or 

 bidentale. 



60 CHILODIA. Upper lip of calyx entire : lower one bifid. 

 Anthers mutic. 



61 CRY'PHIA. Both lips of calyx entire. Anthers mutic. 



62 PROSTANTHE'RA. Both lips of calyx entire, or hardly f. 

 Anthers spurred. 



63 HEMIA'NDRA. Upper lip of calyx entire : lower one bifid. 

 Anthers dimidiate. 



2. Calyx equal, 5-toothed. 



64 HEMIGE'NIA. Anthers all with one of the cells fertile, and 

 the other abortive. 



65 WESTRI'NGIA. Anthers of upper stamens dimidiate, gla- 

 brous : lower ones sterile. 



66 MICROCORYS. Anthers of upper stamens dimidiate, 

 bearded : lower ones sterile. 



TRIBE VIII. 



NEPE'TE^E. Calyx equal or oblique, or sub-bilabiate, usually 

 15-nerved: superior teeth the largest. Corolla bilabiate. Sta- 

 mens didynamous : superior ones the longest, ascending or 

 diverging. 



1 . Stamens diverging. 



67 LOPHA'NTHUS. Character the same as that of the sec- 

 tion. 



2. Stamens ascending. 



68 NE'PETA. Calyx not bilabiate ; upper tooth a little 



