330 



LAMIACEAE. 



3. Mentha citrata Ehrli. Berg- 

 AMOT Mint. (Fig. 356.) Perennial 

 by leafy stolons; stem weak, decum- 

 bent or ascending, l°-2° long. Leaves 

 petioled, thin, ovate or ovate-orbicu- 

 lar, obtuse or the upper acute at the 

 apex, sharply serrate, the larger about 

 2' long; whorls of flowers in terminal 

 short obtuse spikes, and commonly 

 also in the upj)ermost axils; calyx 

 glabrous, its teeth subulate, one-half 

 as long as the tube, or longer; corolla 

 glabrous. [M. aquatica Jiirsuta ci- 

 trata of Eeade.] 



Frequent in marshes. Naturalized. 

 Native of Europe. Sparingly natural- 

 ized in the United States, and in the 

 West Indies. Flowers in summer and 

 autumn. 



4. Mentha rotundifdlia 



(L.) Huds. EOUXD-LEAVED 



Mint. (Fig. 357.) Perennial 

 by leafy stolons, canescent or 

 tomentose-puberulent, somewhat 

 viscid, 3'-8' high. Leaves el- 

 liptic, or ovate-oblong, short- 

 petioled, or sessile and some- 

 what clasping by the subcor- 

 date or rounded base, obtuse, 

 crenate-serrate, 2"-5" long, ru- 

 gose-reticulated beneath; whorls 

 of flowers in spikes which elon- 

 gate to d"-10" in fruit; bracts 

 lanceolate, acuminate; calyx- 

 teeth setaceous, usually about 

 one-half as long as the tube; 

 corolla puberulent. [M. spicata 

 rotundi folia L.] 



In waste places, on hillsides 

 and along roads, rather common. 

 Naturalized. Native of Europe. 

 Widely naturalized in America. 

 Flowers in summer and autumn. 



Mentha arvensis L., the Corn Mint, or Field Mint of Europe, which 

 has the flowers all whorled in the leaf-axils, is recorded by Lefroy as com- 

 mon in Pembroke Marsh prior to 1879 and also mentioned by H. B. Small, 

 and by Jones, but repeated search has failed to reveal its presence there 

 now, and it is not accredited to Bermuda by other authorities. 



