LABIATJE. 



6G7 



12 PVCHXOSTACHTS. Teeth of fructiferous calyx subulately 

 spinose. Whorls of flowers spicate. 



3. Lower tegment of corolla somewhat stipitate, transversely 

 subcallous at the base, and at length saccate, but bent down 

 abruptly at the time offorescence. 



13 PE'LTODOX. Teeth of calyx subulate, peltate at apex. 

 Habit of Hy pits capitata. 



14 MARSYPIA'XTHUS. Achenia concave, boat-shaped, with 

 membranous, involute, fringed margins. Habit of Hyptis 

 capitata. 



15 HT'PTIS. Calyxes not peltate, fructiferous ones not bila- 

 biate. Achenia not cymbiform. 



16 ERIOPE. Floriferous calyx equal, fructiferous one in- 

 creasing and bilabiate : upper lip tridentate : lower lip bidentate. 



4. Corolla bilabiate : upper lip 2-lobed : hirer lip S-lobed. 

 Stamens inclosed in the tube. 



1 7 LAVA'XDULA. Character the same as that of the section. 



TRIBE II. 



MEXTHOI'DE.E. Corolla subcampanulate, or funnel-shaped; 

 tube shorter than the calyx, or hardly longer ; limb 4-5-cleft, 

 with the lobes nearly equal, rarely sub-bilabiate. Stamens dis- 

 tant, straight, or diverging, not approximating by pairs, nearly 

 equal ; the lower ones are a little longer ; the superior ones 

 sometimes abortive. 



% 1. Anthers terminal, also the younger ones are confidently 

 1 -celled. Stamens somewhat declinate. 



18 POGOSTE'MOX. The 3 superior segments of corolla ap- 

 proximate : lower one declinate. 



19 DYSOPHY'LLA. Corolla almost regular. 



2. Anthers tersatile ; cells divaricate, at length confluent. 

 Stamens sometimes someithat ascending. 



20 ELSHOLTZIA. Corolla tubular ; limb short, bilabiate. 

 Lobes of gynophore shorter than the ovarium. 



21 TETRADE'XIA. Corolla regular. Lobes of gynophore 

 longer than the ovarium. 



| 3. Anthers Z-celltd ; cells parallel. Corolla normal, at 

 in the n-hole tribe. 



22 COLEBROOKIA. Fructiferous calyx pappose, adhering to 

 the achenia. 



23 PERI'LLA. Upper tooth of fructiferous calyx small. Style 

 deeply bifid. 



:24 ISA'XTHCS. Achenia rather large, wrinkled reticulately. 



25 PRE'SLEA. Calyx 4-toothed. 



26 ME'XTHA. Calyx 5-toothed, not pappose. Achenia 

 smooth. Fertile stamens 4. 



27 LTCO'PUS. Superior stamens abortive. 



4. Cells of anthers disjoined, nith a filiform connective. 



28 MERIA'XDRA. Character the same as that of the section. 



TRIBE III. 



MONA'KDEJE. Corolla bilabiate. Superior stamens abortive, 

 or if fertile bearing linear, connate anthers : lower stamens 

 fertile, ascending ; anthers linear, sometimes confidently 1-celled, 

 connate, 'sometimes dimidiate, free, or connate behind, with a 

 linear connective, which is articulated to the filament, and bear- 

 ing the fertile cell at top, truncate behind, but generally drawn 

 out, filiform, elevated, bearing the other cell, which is sometimes 

 difibrmed and empty, and sometimes fertile. 



1 . Connective fliform, articulated to the f lament. 



29 SA'LVIA. Connective drawn out under the insertion, naked 

 or bearing a cell behind. 



30 AUDIBE'RTIA. Connective not drawn out under the 

 insertion. 



2. Connective small. Fertile stamens 2. 



31 ROSMARI'XCS. Calyx bilabiate : upper lip entire : lower 

 lip bifid. Filaments toothed at the base. 



32 MONA'RDA. Calyx 5-toothed. Lower lip of corolla 

 linear, shortly trifid at apex. 



33 BLEPHI'LIA. Calyx 5-toothed, sub-bilabiate ; throat naked 

 inside. Lower lip of corolla broad, trifid. 



34 ZIZI'PHORA. Throat of calyx villous inside. Corolla of 

 Blfphilia. 



3. Connective smalL Fertile stamens 4. 



35 HORMI'NCM. Character the same as that of the section. 



TRIBE IV. 



SATCREI'SE.E. Calyx 5-toothed, equal, or bilabiate, f . Tube 

 of corolla exannulate, shorter than the calyx, and imbricating 

 bracteas, or hardly longer ; limb sub-bilabiate : upper lip flat, 

 entire, or emarginately bifid ; lobes of lower lip flat. Stamens 

 straight, diverging, or hardly ascending, equal, or the superior 

 ones are shortest, or abortive. Anthers not dimidiate. 



$ 1. Fertile stamens 4. Calyx 10-13-nerted. 



36 BTSTROPOGOX. Calyx equal ; throat villous inside. 

 Inflorescence cymose, or spicate. 



37 PTCHNA'NTHEMCJC. Calyx equal, or sub-bilabiate, naked 

 inside. Upper lip of corolla oblong, entire, or emarginate. 

 Whorls many-flowered, bracteate. 



4 a 2 



