Labiatae. 1 1 1 



MENTHA ROTUNDIFO'LIA (50). Round-leaved Mint. 8—9. 

 (1102) Leaves sessile broadly ovate obtuse crenate wrinkled above shaggy 



beneath, flowers white or pink in a terminal interrupted spike. Wei 



places. 



MENTHA VIR'IDIS. Spear-mint. 8—9. Leaves lanceolate acute ser- 

 (1105) rate, flowers lilac in a slender terminal interrupted spike, smell very 

 pungent. (The mint of gardens). Wet places. 



MENTHA PIPERITA (64). Peppermint. 8—9. Leaves petiolate 

 (i 106) glabrous ovate acute-serrate, flowers lilac in a dense cylindrical terminal 

 interrupted spike. Wet places. Fig. p. 99. 



MENTHA AQUATICA (104). Water-mint. 8-9. Covered with 

 (1107- soft hairs, leaves ovate serrate, upper leaves shorter than the flowers 

 1 108) resembling bracts, flowers lilac or purplish in dense terminal heads 

 and axillary whorls. Marshes. 



III. — THYMUS. 



THY'MUS SERPYL'LUM (in). Thyme. 6—8. Calyx 2-lipped 



(11 18) upper lip 3-toothed lower 2-toothed throat hairy, corolla short upper 



lip notched lower 3-lobed, stem prostrate, flowering stems erect, leaves 



oblong or ovate small, flowers small rose-purple in capitate whorls, 



very aromatic. Dry heaths. 



IV .—ORIGANUM. 

 ORIG'ANUM VULGA'RE (89). Marjoram. 7—9. Calyx 5-toothed 

 (1117) throat hairy, corolla 2-lipped upper lip notched lower 3-lobed, stem 

 erect branched, leaves broadly ovate, flowers small purple with large 

 coloured imbricated bracts in a crowded panicle. Dry hills. 



V.—CALAMJNTHA. 



Calyx 2-lipped, corolla-tube straight, throat naked upper lip erect some- 

 what flat, longer than the stamens, lower lip 3-lobed spreading. 



Calyx-tube curved, C. Acinos. 



Calyx-tube straight, 457 



457 Flowers large, C. Clinopodium. 



457 Flowers small, C. officinalis. 



CALAMINTHA A'CINOS (74). Basil Thyme. 7—8. Stems— 6 in. 

 ( 1 121) more or less branched, leaves petiolate ovate acuminate serrate, 



flowers purple spotted with white and darker purple in whorls of 5 or 



6, calyx-tube bent. Dry batiks and fields. 



CALAMINTHA OFFICINA'LIS (61). Calamint. 7-9. Stem 1—3 

 (i 123) ft. hairy, leaves ovate crenate, flowers purple in loose one-sided 



cymes, corolla \ — \ in. , calyx-tube straight with spreading triangular 



teeth . Dry waste places . 



