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51. Mentha alnorum Gdgr. 



Multicaulis, pallide virens, longe hirsuta; caùle villoso, 

 virente, basi ramoso, ramis ascendentibus, elongatis; foliis 

 ovalibus, vix acutis, basi rotundatis, valdeque abrupte 

 attenuatis, pallide viridibus, undique hirsutis, subtus albi- 

 dis; serraturis brevissimis, inaeque triangularibus, apertis; 

 capitulis globosis, villosis; calyce hirto, violaceo; pedicel- 

 lis sublanatis; corolla rosea; staminibus exsertis; nuculis 

 flavescentibus, subglobosis. 



Hab. Gallia, Bhône, in alnetis hu midis ad Arnos 

 (Gdgr.). 



52. Mentha viticulosa Gdgr. 



Robusta, multicaulis saturate virens parceque villosa; 

 stolonibus longissimis, glabris, intense virenti-rubentibus; 

 caule atrovirente; villoso, ascendente, ramis rectis; foliis 

 ovalibus, vix acutis, basi rotundato-subattenuatis, longe 

 petiolatis, saturate viridibus, undique pubescentibus; ser- 

 raturis inaequalibus, rectis, cuspidatis; capitulis parvis, 

 globosis, villosis; calyce hirto, subviolaceo; pedicellis vil- 

 losis; corolla rosea; staminibus exsertis. 



Hab. Gallia, Bhône, in humidis ad Arnos (Gdgr.). 



53. Mentha pilatensis Gdgr. ; 



Villosa, intense virens; stolonibus hirsutis, virescenti- 

 bus; caule villoso, recto, ramis raris, rectis; foliis late 

 obovato-subacutis, basi breviter attenuatis, longe petiola- 

 tis, undique pubescentibus, saturate viridibus, stolonife- 

 ris hirsutis; serraturis aequalibus, cuspidatis, paulo aper- 

 tis; capitulis globosis, hirsuto-lanatis; calyce hirsutissimo; 

 pedicellis lanatis; corolla rosea; staminibus exsertis. 



Hab. Gallia, Loire, in humidis ad Montent Pïlat, 4000! 

 (Seytre; Gdgr.). 



