9. 



11. 



<?Qî) 



— ■') — — 



- fCaules virentes, nec villoso-aibidi 8 



' ICaules aibo-tomentosi , .... P. JBoraei. 



Glabrum vel glabrescens; folia elliptica vel ovato- 

 suborbicularia, intégra vel subdentosa, basi .rotun- 



8. {data vel paululum attenuata 9 



IVillosum; folia obovata, fere omnia dentata, basi 

 evidenter contracta P. serratum 



Rubens; corollae majuscutae .tubus albus; folia 



elliptica P. clicliroanthum 



Virens; corollae mediocris tubus roseus; folia ovato- 

 suborbiculata P. vulgare 



| Folia oblongo-lanceolata vel linearia 11 



(Folia ovata, elliptica vel obovata. ........ 13 



Folia oblonga nec linearia 12 



Folia lanceolato-linearia vel linearia 



P. lineari folium. 



Rami breves; folia parum dentata, subobtusa, alia 



oblonga, alia lanceolata P. erectum. 



12 i 



'Rami elongati; folia regulariter dentata, acutius- 



cula, omnia oblongo-lanceolata. P. Duvandoanum. 



Glomeruli florales fere corymbosi; pedicelli calyce 



longiores 14 



•/Glomeruli globosi, subsessiles; flores sessiles, vel 

 pediceliis calyce breviores 15 



. , fTotum glabrum P. algeriense. 



(Totum pubescens P. numidicum. 



„ f Virens vel albicans, nec glaucum 16 



lOmnino albo-glaucum P. Thureti 



1ß jVilloso-griseum vel albicans 17 



(Virens, parce hirsutum : .... 18 



.- f Calyx dense hirsutus, haud-araneosus P. eriocalyx 

 '(Calyx subglabsescens P. origanoides. 



