410 THE LABIATE TAMILT. 



Most of the species have also a peculiar strong scent, either highly aromatic 

 in many of our culinai-y potherbs, or as disagreeable in several species ot 

 Stachys. Distinct however as the vrhole family is, the genera into which 

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

 which are alhed 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 i Stamens in pairs, or 2 only, under the upper Hp of the corolla 2 



(.Stamens concealed within the tube of the corolla 16 



{Calyx regularly 5-toothed. Stamens always 4 8 

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

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



o ("Calyx with 15 parallel ribs. Outer stamens the shortest 7. Nepeta. 



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



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



4< 15. Leonukus. 



[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 



„ ( Flowers bright yellow Yellow Lamium. 



l Flowers purple, pink, or white 7 



/"Ifuts flat and angular at the top. Lateral lobes of the lower lip of the corolla either 



1 very small and tooth-like or pointed. Anthers hairy 16. Lamium. 



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



,. glabrous 8 



„ rCfilyx funnel-shaped, the teeth ovate, spreading, with a fine point . .14. Ballota. 



\ Calyx tulmlar or eampanulate, with narrow-pomted teeth 12. Stachys. 



■ Calyx of 2 entire lobes, the upper one with a concave scale on the back 9. Skullcap. 

 9 ' Calyx with the upper Hp more or less toothed or lobed, the lower one 2-cleft to the 



. base 10 



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



10-{ with an imperfect one) 1. Sage. 



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



("Calyx broadly eampanulate, veined, with 4 or 5 obtuse lobes or teeth . 10. Melittis. 



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



y below the anther 8. Prunella. 



(.Calyx upj)er-lip 3-toothed, the tube 13-nerved, hairy inside at the top 6. Calamint. 

 f^Lobes of the corolla nearly equal 13 



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

 I., make the corolla appear 1-lipped 17 



,„ 5" Stamens 2 3. Ltcopus. 



(^ Stamens 4 14 



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



14.; throat 3. Mint. 



LUpper hp of the corolla erect. Calyx very hairy in the throat 1.5 



rLow, procumbent plant, with small leaves. Calyx distinctly 2-lipped . 4. Thtme. 



15 < Erect plant. Flowers in heads, intermixed with bracts in a terminal panicle. Calyx 



(_ nearly equally 5-toothed 5. Maejoeam. 



• Calyx with 10 recurved teeth. Stamens perfect 11. Hokehound. 



. Calyx with 5 teeth. Stamens barren 14 



f Short upper lip of the corolla deeply cleft into 2 teeth, between which the stamens 



Vl-{ protrude 17. Geemandee. 



l^Short tooth-like upper hp entire or notched, behind the stamens . . .18. Buqle. 



The genera of Labiates have been distributed into eight Tribes, of which 

 the five following are represented in Britain : — 



1. MoNABDE^. Two ascending stamens, in which one cell of each anther is either 

 wanting or separated from the other. Oenus, — 1. Sage. 



3. Satukeine.e. Two or four spreading or ascending stamens. Upper lip of the 

 corolla with the lobes usually flat. Genera: — 2.^Lycopds; 3. Mint; 4. Thtme; 5. 

 Maejoeam; and 6. Calamint. 



3. NEPETE.B. Four ascending stamens, of which the upper or middle pair are the 

 longest (project above the others), whilst in the preceding and two following tribes the 

 lower or outer pair are the longest. Genus, — 7. Nepeta. 



4. Staohvde^. Four ascending stamens. Upper Up of the corolla usually concave 



16{i 



