the Britijh Species cf Mentha. 217 



In ericctis ct pafciiis humidis. Fl. Septembri. 



Herba odore acri, aromatico. Caules pioftrati, ramofiflimi, repentcs, 

 pilofi, angulis obtufiufculis. Folia parva, petiolata, ovata, obtufa, 

 crenato-ferrata, fubtus pracipue fubhirfuta. Vcrtidlii fefliles, pro 

 foliorum ratione magni, numerofi, multiflori. BraElea nuUas. 

 Pedicelli tomentofo-incani, feu pilis breviffimis, dcnfiffimis, nn- 

 dique tc£li. — Calyx tubulofus, gracilis, fulcatiis, refinofo-punc- 

 tatus, pills denfis, brevibus, porredis, undique veftitns, dentibiis 

 ciliatis, acutis, inxqualibus, fauce villis albisconniventibus claufa. 

 Corolla calyce duplo longior, purpurea, bafi alba, extus villpfiffima. 

 Stamina cxferta. 



Penny-royal cannot be confounded with any other Britifli Mint, 

 hor is it fubjedt to any varieties worth notice. Culture makes it 

 more luxuriant and ered. Sometimes the flower is white. There 

 are fome foreign fpecies carefully to be diflinguifhed from it by the 

 different hairinefs of the calyx, as well as other marks. They agree 

 with it in the fhort foft clofe downinefs of its flower- ftalks, by which, 

 without regarding its fmall leaves, and different habit, it is decidedly 

 diftinguifhed from every other Britifh fpecies. This difference con- 

 firms the remark 1 have fo often made, of the importance of thofe 

 parts in charadlerizing the fpecies throughout the whole genus. 



VoL.V. Ff XX. On 



