MENTHA. 253 



4. M.piperita (L.) ; I. stalked ovate-lanceolate or oblong ser- 

 rate, upper 1. smaller, bracts lanceolate, spikes lax short blunt 

 interrupted below, cal. tubular glabrous below with lanceolate 

 subulate teeth. E. B. 687. St. and 1. nearly glabrous or hairy 

 on the nerves beneath. Cal. glandular. /3. sylvestris (Sole) ; 

 1. ovate rounded and almost heartshaped below, spikes elongated. 

 Sole 24. Wet places, rare. P. VII. VIII. Pepper Mint. 



5. M. aquatica (L.) ; I. stalked ovate serrate rounded or 

 slightly cordate below, uppermost I. like bracts and falling short 

 ofthefl., whorls few subglobose capitate the uppermost terminal, 

 cal. tubular with triangular subulate teeth hairy as well as the 

 pedicel. M. hirsuta Sm., E. B. 447. Cal. glandular. Inflores- 

 cence capitate, determinate. Fl. in terminal and axillary stalked 

 clusters rather than whorls. M. citrita Ehrh., M.odorata Sole 9, 

 E. B. 1025, is a glabrous variety of this species ; and M. crispa 

 E. B. S. 2/85 a form with cut and crisped leaves. In wet 

 places. P. VII. VIII. Capitate Mint. 



** Throat of cal. naked. Inflorescence indeterminate. Fl. in 

 axillary, distant whorls ; none amongst the uppermost /., or 

 shorter than them. 



6. M. pratensis (Sole) ; I. nearly sessile ovate-lanceolate acute 

 serrate, floral I. similar the smaller ones exceeding thefl., whorls 

 distant subglobose, pedicels glabrous, cal. bellshaped, teeth hairy. 

 Sole 17. M. gentilis E. B. 449. M. gracilis Sm St. and 1. 

 usually glabrous. L. paler beneath, glandular. Cal. glandular. 

 \_M. rubra (Huds.), M. gentilis (Sole), is considered as distinct 

 from nos. 6 and 7 by Fries.] Marshy places, rare. P. VIII. 

 IX. E. 



7. M. sativa (L.} ; I. stalked ovate or elliptical serrate, upper 

 ones similar but smaller all exceeding the fl., whorls all distant 

 dense, cal. tubular or bellshaped, teeth triangular-lanceolate acu- 

 minate. Uppermost leaves often barren. a. vulgaris ; cal. and 

 pedicels hairy. M. sativa Sm., E. B. 448. /3. M. rubra (Sm. 

 not Fr.) ; pedicels and lower part of the calyx glabrous, st. 

 slightly branched reddish, whole plant nearly glabrous. E. B. 

 1413. y. M. gentilis (Sm.) ; pedicels and lower part of the cal. 

 glabrous, teeth shorter triangular, whole plant nearly glabrous, 

 st. much branched green, 1. all of nearly the same size. The 

 characters of this variety closely approach M . arvensis. 8. ? M. 

 acutifolia (Sm.) ; pedicels and cal. hairy all over, 1. ovate-lanceo- 

 late tapering at each end. E. B. 2415. A specimen from near 

 Settle, Yorkshire, only differs from Smith's plant by having 

 glabrous pedicels. Var. a, /3, and y are closely connected by in- 

 termediate forms. Wet places, d. Banks of the Medway, but 

 not found for many years. P. VII. VIII. Whorled hairy Mint. 



