ORDER 89. LABIATE PLANTS. 2C9 



Analysis of the Genera. 



Flowers w'th only 2 perfect stamens. . . .7 



Flowers with the 4 perfect stamens all declining to the lower lip. . . .a 



Flowers with the 4 perfect stamens erect or ascending to the upper lip ... .2 



2 Stamens of equal length. Corolla almost regular, 4 or 5-lobed c 



2 Sta., the upper pair longer than the lower (outer). Calyx 13-15- veined k 



2 Stamens, the lower pair longer than the upper (interior) pair. . . .3 

 8 Stamens diverging apart, mostly straight and exserted.. . .6 

 8 Stamens parallel, ascending and long-exserted from the upper side....b 



8 Stamens parallel, ascending in pairs beneath the upper lip 4 



4 Calyx 13-veiued, 5-toothed, and somewhat 2-lipped g 



4 Calyx 5-10-veined or irregularly netted 5 



5 Calyx strongly 2-lipped, upper lip truncate, closed in fruit.... ra 



5 Calyx not labiate, 3 or 4-lobed, open in fruit. . . .n 



5 Calyx subequally 5-toothed, teeth not spinescent....o 



5 Calyx subequally 5-toothed, teeth ending in sharp spines q 



5 Calyx unequally 8-10-toothed 



6 Calyx hairy in the throat, mostly labiate. . . .f 

 8 Calyx naked in the throat, mostly equal, 5-toothed. . ,.e 

 7 Stamens ascending beneath the galea (upper lip). Anthers 1-celled. . ..h 

 7 Stamens exserted, distant. Anthers 2-celled. ..d 



a Corolla upper lip 4-lobed, lower entire, flattish. t Sweet Basil. O'CYMUM. 



a Corolla upper lip 4-lobed, lower saccate, deflexed. R. Hyptis. HYPTIS. 



a Corolla upper lip 2-lobed, lowerS-lobed, long, lilac, t La r ?nder. LAVAN'DULA. 

 b Stamens exserted through a fissure in the tube. Blue Curls. TRICHOS'TEMA.* 

 b Stamens very long, involute, arching the corolla. Germander. TEU'CRIUM. 

 c Corolla limb equally 5-lobed. Stamens short. Blue-fnlse-Gentian. ISAN'THUS. 

 c Corolla limb 4-lobed, the broadest lobe notched. Peppermint, &c. MENTHA. 1 

 d Cor. nearly reg., 4-cleft. Calyx naked in throat. Water Hoarhovnd. LYC'OPUS. 2 

 d Corolla labiate, cyanic, throat naked. Stain, straight. Dittany. CUNI'LA. 3 

 d Cor. labiate, cyanic, throat naked. Stam. ascend. Pennyroyal. HEOE'OMA. 

 d Corolla labiate, yellow, throat hairy. Stamens \ 



long-exserted. > JJorse-balm. COLLINSO'NIA. 



o Fls. ycl. Coarse herbs not fragrant, with large Ivs. ) 



e F'r. bright blue. Handsome herbs. Calyx 15-veined. f Hyssop. HYS'SOPUB. 



e F.S. pale blue, in dense lids. Calyx 10 or 13-striate. Hjld Basil. PYCNAN'TIIEMUJI. 



e F.s. pink-colored, axillary. Lvs. linear, small, t Summer Savory. SATIIKE'JA. 



f Corolla exserted, pink-color, raeemed. Leaves linear, smooth. Stem If. S. 



DIPERAN'DRA, 

 f Corolla short as calyx, pale-purple. Bracts roundish, colored. 



Marjoram. ORIO'ANUM. 

 f Corollu short as calyx, bl'ie-purp. Bracts minute, green. Tkyrr*. TnmuB. 



