Order 89.— LABIATE PLANTS. 269 



Analysis of the Genera. 



§ Flowers "with 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 eqaallength. Corolla almost regular, 4 or 5-lobed c 



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



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



3 Stamens diverging apart, mostly straight and exserted 6 



3 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-veined, 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 m 



6 Calyx not labiate, 3 or 4-lobed, open in fruit. . . .u 



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 s 



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



6 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-ceIled. - . .d 

 a Corolla upper lip 4-lobed, lower entire, flattish. + Siveet Basil. O'cymum. 



a Corolla upper lip 4-lobed, lower saccate, deflexed. S. Hyptls. Hyptis. 



a Corolla upper lip 2-lobed, lower 3-lobed, long, lilac, t La'^ender. Lavan^dula. 

 b Stamens exserted through a fissure in the tube. Blue Curls. Tkichos''tema. 

 b Stamens very long, involute, arching the corolla. Germander. Teu^cridm. 

 c Corolla limb equally 5-lobed. Stamens short. Blue-false- 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 Boarhomid.jjxc^ ofvs. 2 

 d Corolla labiate, cyanic, throat naked. Stam. straight. Dittany. Cuni'la. 8 

 d (]or. labiate, cyanic, throat naked. Stam. ascend. Pennyroyal. Hede'oma. 

 d Corolla labiate, yellow, throat hairy. Stamens ^ 



long-exserted. . v Horse-lalm. Collinso'nia. 



e Fls. yel. Coarse herbs not fragrant, with large Ivs. ) 



e Fls. bright blue. Handsome herbs. Calyx 15-veined. + Hyssop. ilYs'&ovvs. 



e Fls. pale blue, in dense hds, CalyxlO or 13-striate. Wild Basil. Tyc^x^'th-ethvu. 



e Fls. pink-colored, axillary. Lvs. linear, small, t Summer Savory. Sature'ja. 



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



Diceran'dra. 

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



Marjoram. Orig'anum. 

 f CoTolia short as calyx, blue-purp. Bracts minute, green. Thyme. Thymus. 



