LVII. LABIATE. 343 



style rising from the centre, and shortly cleft at the top into 2 

 stigniatic lobes. Fruit enclosed in the persistent calyx, separat- 

 ing into 4 small, 1-seeded and seed-like nuts. 



A vast family, spread over every quarter of the globe, and readily 

 known from all Monojpetals, except Boraginece, by the 4-lobed ovary and 

 the 4 small nuts resembling naked seeds in the bottom of the calyx ; 

 and from Boraginece by their opposite leaves, the want of the fifth 

 stamen, and usually by the more irregular flowers. Most of the species 

 have also a peculiar strong scent, either highly aromatic in many of our 

 potherbs, or as disagreeable in several species of Stachys. Distinct, 

 however, as the whole family is, the genera into which it has been 

 divided are much less so than could be wished. Those especially 

 which are allied to Stachys are separated from it by slight differences 

 in the shape of the calyx and corolla, which are not always easy to 

 appreciate. 



( Stamens, at least the longer ones, longer than the upper lip of the corolla . 12 



1 -j Stamens in pairs, or 2 only, under the upper lip of the corolla .... 2 



( Stamens concealed within the tube of the corolla 16 



{Calyx regularly 5-toothed. Stamens always 4 3 

 Calyx distinctly 2-lipped, the upper teeth more or less united into an upper lip, 

 the 2 lower ones united or distinct. Stamens 4 or 2 9 



„/ Calyx with 15 parallel ribs. Outer stamens the shortest . . . 7. Nepeta. 

 \ Calyx with 5 or 10 principal ribs or veins. Outer stamens the longest . . 4 



{Lower leaves deeply divided. Upper lip of the corolla very hairy, almost 

 woolly 15. Leonurus. 

 Lower leaves coarsely toothed. Upper lip of the corolla glabrous or hairy . 5 

 {Anthers opening by transverse valves, one valve fringed with small hairs. 

 13. Galeopsis. 

 Anthers opening by longitudinal valves 6 



r. J Flowers bright yellow 16. Lamium Galeobdolon. 



\ Flowers purple, pink, or white 7 



f Nuts flat and angular at the top. Lateral lobes of the lower lip of the corolla 



h\ either very small and tooth -like or pointed. Anthers hairy . 16. Lamium. 



| Nuts rounded at the top. Lateral lobes of the lower lip usually obtuse. Anthers 



V glabrous 8 



8 / Calyx funnel-shaped, the teeth ovate, spreading with a fine point 14. Ballota. 

 °\ Calyx tubular or campanulate, with narrow-pointed teeth . 12. Stachys. 



C Calyx of 2 entire lobes, the upper one with a concave scale on the back. 

 qJ 9. Scutellaria. 



1 Calyx with the upper lip more or less toothed or lobed, the lower one 2-cleft to 



\. the base 10 



l Stamens 2 (the filaments branched, one branch with a perfect anther-cell, the 



10 < other with an imperfect one) 1. Salvia. 



( Stamens 4, each with a 2-celled anther 11 



! Calyx broadly campanulate, veined, with 4 or 5 obtuse lobes or teeth. 

 10. Mel/ttis. 

 Calyx upper-lip flat and angular, with 3 small teeth. Filaments with a small 

 tooth below the anther 8. Prunella. 

 Calyx upper-lip 3-toothed, the tube 13-nerved, hairy inside at the top. 

 6. Calamintha. 

 {Lobes of the corolla nearly equal 13 

 Upper lobes of the corolla very short and tooth-like, lower ones elongated so as 

 to make the corolla appear 1 -lipped 17 



,o/ Stamens 2 2. Lycopus. 



l6 \ Stamens 4 14 



{Corolla nearly regular, 4-lobed. Calyx equally 5-toothed, scarcely hairy in the 

 throat S. Mentha. 

 Upper lip of the corolla erect. Calyx very hairy in the throat . .15 



