Oeder 89.— labiate PLANTS. 255 



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 equal length. Corolla almost regular, 4 or 5-lobed o 



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



2 Stamens, the lower pair longer than the upper (interior) pair 8 



3 Stamens diverging apart, mostly straifbt and exserted 6 



3 Stamens parallel, ascending and lon^-exserted from the upper side 1> 



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



4 Calyx 18- veined, 5-toothed, and somewhat 2-lipped g 



4 Calyx 5-10-yeined or irregularly netted. . . .5 



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



5 Calyx not labiate, 3 or 4-Iobed, open in fruit u 



S Calyx subequally 5-toothed, teeth not spinesoent o 



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



* 5 Calyx unequally 8-10-toothed s 



6 Calyx hairy in tlie 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-oelled h 



7 Stamens exserted, distant. Anthers 2-oelled d 



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



a Corolla upper lip 4-lobed, lower saccate, deflexed. S. Byptis. Htptis. 



n. Corolla upper lip 2-lobed, lower 3-lobed, long, lilac, t Lmender. Lavan 'dula. 

 b Stamens exserted through a fis.sure in the tube. Blue Gurls. Teiohos'tema. 

 b Stamens very long, involute, arching the corolla. GermaTuUr. TEn'oBiDsi. 

 o Corolla limb equally 5-lobed. Stamens short. Biue-false- Gentian. IsAu'THns. 

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

 d Cor. nearly reg.,4-cleft. Calyx naked in throat. Water Boarhonnd.Jjro'oFve.'^ 

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

 d Cor. labiate, cyanic, throat naked. Stam. ascend. Permyroyai. Hede'oma. 

 d Corolla labiate, yellow, throat hairy. Stamens \ 



long-exserted. \ Sorse-ialm. Collinso'nia. 



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



e FIs. bright blue. Handsome herbs. Calyx 15-veined. t Byasop. Hys'sopus. 



e FIs. pale blue, in dense hds. CalyxlO orl3-striate. TfiZf^ ^a A Pycnan'themum. 



e FIs. pink-colored, axillary. Lvs. linear, small, t Summer Savory. Sathhe'ja. 



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



Pioeeah'dea. 

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



Marjoram. Oeiq'anum. 

 f Corolla short as calyx, blue-purp. Bracts minute, green.' Thyme. Thymos. 



