Mentha.'] DIDYNAMIA — gymnospermia. 227 



M. piperita. Fl. Aug.l/. — Cultivated for culinary purposes, being aro- 

 matic and pungent. 



4. M. piperita, Sni. (Pepper-3Iint) ; leaves ovato-Ianceolate 

 strongly serrated acute slightly hairy stalked, spikes interrupted, 

 bracteas lanceolate, calyx glandular quite glabrous at the base. 

 E. Bot. t. 687. 



Watery places in many parts of England ; but often the outcast of 

 gardens. Alford, Aberdeenshire. North Queensferry, Dr Dewar. Fl. 

 Aug. Sept. If. — Much cultivated for the sake of its essential oil, which 

 resides in minute glands, conspicuous on the leaves and especially on 

 the cal. Mr W. Wilson finds a var. near Warrington in which these 

 glands are not visible even with a microscope : " its odour is sweet and 

 mild, without the pungency of the common sort cultivated in gardens." 



5. M.*ci(rdfa, Ehrh. (Berffamof-3Iint) ; leaves broadly ovate 

 or cordate strongly serrated acute glabrous on both sides, spikes 

 capitate very obtuse, calyx and pedicels quite glabrous. — 31. 

 odorata, Sole. — E. Bot. t. 1025. 



Watery places, rare. Cheshire ; near Bedford and in N. AVales. 

 Fl. Aug. Sept. i^. — I have only seen garden specimens of this. It 

 has much the habit of 31. hirsiita ; but is quite glabrous, and " has 

 the smell of the Bergamot Orange or of the herbage of Monarda 

 didyma.''^ Sm. 



6. M. hirsuta, L. {hairy 31int); leaves ovate serrated pubes- 

 cent stalked, flowers capitate or whorled, calyx hairy, pedicels 

 with reflexed hairs. E. Bot.t. 447. — 31. saliva, L. — E. Bot. t. 448. 



Banks of rivers and marshes, frequent. Fl. Aug. Sept. '^.. — Very 

 variable. Leaves often much crisped. Sometimes ihejiowers are ca- 

 pitate, sometimes whorled, and sometimes the whorls are placed so close 

 on the extremity of the branches as to form a spike. 



7. M. acutifolia, Sm. {sharp-leaved 3Iint) ; leaves ovato- 

 Ianceolate tapering at each end, flowers whorled, calyx hairy 

 all over, hairs of the flowerstalks spreading. E. Bot. t. 2415. 

 — 31. arvensis, Benth. 



Banks of the Medway. Fl. Sept.? — Very closely related to the last 

 species (5'/n.), — and probably a mere variety. 



8. JNI. rubra, Sm. (tall red 3Iint) ; "stem upright zigzag," 

 (Sm.), leaves ovate serrated subglabrous stalked, flowers 

 whorled, pedicels and lower part of the calyx quite glabrous, 

 teeth hairy. E. Bot. t. 1413. — 31. arvensis. b. Benth. 



Wet places in hedges and thickets and banks of rivers. Fl. Sept. 

 If. — 4—5 feet high. Flowers purplish-red, with hnear, somewhat hispid 

 bracteas at the base. 



9. M. getitilis, L. (bushy red Mint); "flowers whorled, leaves 

 ovate, stem much branched spreading, flower-stalks and base 

 of the bell-shaped calyx nearly glabrous." — E. Bot. t. 2118. — 31. 

 arvensis. 73. Benth. 



Watery places, rare. North Wales. River-side above Warrington. 

 Holt, in Norfolk ; and in Somersetshire. FL Aug. "U .—I have seen 

 no Scottish specimens of this plant. Mine are from the Holt station. 



