Mentha.] LABIATiE. 213 



5. M. acutifolia, Smith. Fragrant sharp-leaved- Mint. Leaves 

 ovato-lanceolate, tapering at each end; flowers whorled; calyx 

 hairy all over; hairs of the flower-stalks spreading. Br. FL 1. 

 p. 270. E. Fl. v. iii. p. 81. E. Bot. t. 2415. 



Banks of Lough Erne ; Doctor Scott. Fl. Sept. % .— " Very 

 closely related to the following species," ( S?n. J and probably only a 

 variety of it. 



6. M. hirsuta, Linn. Hairy Bog-Mint. Leaves ovate, ser- 

 rated, pubescent, stalked ; flowers capitate or whorled ; calyx 

 hairy ; pedicels with reflexed hairs. Br. Fl. 1. p. 270. E. Fl. 

 v. iii. p. 78. E. Bot. t. 447. — Mentha saliva, Linn. E. Bot. t. 

 448. 



Banks of rivers, lakes, and marshes, frequent. Fl. Aug. Sept. %. — 

 Very variable. — Sometimes the flowers are capitate, sometimes whorled, 

 and sometimes the whorls are placed so close on the extremity of the 

 branches as to form a spike. Anthers varying in length. — M. sativa 

 of Engl. Bot. now considered to be only a variety of this, is much 

 more slender and smaller in all its parts than any of the other nume- 

 rous varieties, with the flowers in six or eight distant whorls. It grows 

 abundantly on the gravelly margin of the lake at Farnham ; near to 

 which I found another remarkable variety with ovate acuminate sharply 

 serrated leaves resembling those of our M. piperita, and is probably 

 the M. piperita of Linn, the M. hirsuta y. of Smith. 



7. M. rubra, Sm. Tall red-Mint. Flowers whorled ; leaves 

 ovate ; stem upright, zigzag ; flower-stalks and lower part of the 

 calyx very smooth, teeth hairy. Br. FL I. p. 270. E. FL v. iii. 

 p. 82. E. Bot. t. 1413. 



Wet places, in hedges and banks of rivers. Near Carrigroghan 

 Castle, County of Cork ; Mr. J. Drummond. Between the Chapel 

 of Kilmacannick and the Glen of the Downs ; Major Percy Pratt. 

 Abundant in the County of Derry ; Mr. D. Moore. Fl. Sept. % . — 

 Four to five feet high. Flowers purplish, with linear, somewhat his- 

 pid bracteas at the base. 



8. M. arvensis, Linn. Corn-Mint. Flowers whorled ; leaves 

 ovate; stem much branched, diffuse; calyx bell-shaped, covered 

 all over with horizontal hairs. Br. Fl. 1. p. 271. E. Fl. v. iii. 

 p. 85. E. Bot. J.2199. 



Corn-fields in a moist gravelly soil, not unfrequent. Fl. Aug. Sept. 

 %. — The short and campanulate calyx well distinguishes this species. 

 Peduncles glabrous or hairy. " The smell has been compared to that of 

 decayed cheese." Hooker. 



9. M. agrestis, Sole. Rugged Field-Mint. Flowers whorled ; 

 leaves somewhat heart-shaped, strongly serrated, rugose ; stem 

 erect ; calyx bell-shaped, covered all over with horizontal 

 hairs. Br. Fl. 1. p. 271. E. Fl. v.\Y\. p. 87. E. Bot. t. 

 2120. 



Corn-fields and neglected gardens. Found occasionally near Dub- 

 lin. County of Derry ; Mr. B. Moore. FL Aug., Sept. %. — 

 Nearly allied to the last and perhaps only a variety of it. It may how- 



