318 LABIATE. [MENTHA, 



above nearly glabrous below, leaves smooth thinly hairy, bracts uniform, 

 calyx-teeth very short. M, parietaricefo'lia, Beck. ; subglabrous, stem long, 

 leaves smooth serrated towards the tip, bracts smaller upwards, calyx -teeth 

 short. 



*** Whorls axillary, distant, none towards the ends of the branches. Calyx 



2-lipped ; throat closed with hairs. 

 7. M. Pule'gium, L. ; leaves small shortly petioled ovate or oblong 



subserrate, calyx-teeth ciliate > corolla hairy without glabrous within. 



Penny-royal. 



Pools, wet heaths, &c., from Ayr and Berwick southd. ; Ireland ; Channel 

 Islands ; fl. Aug.-Sept. Glabrous or more or less tomento^e. Stems 4-10 

 in., prostrate or erect (var. erec'ta), much branched, very leafy. Leaves J-f 

 in., spreading and recurved, base acute. Whorls all separate ; bracts folia- 

 ceous, upper sessile flowerless ; bracteoles 0, or obovate and shorter than 

 the flowers. Flowers proterogynous. Calyx and pedicels pubescent or 

 hispid. DISTRIB. Europe, N. Africa, N. and W. Asia. Formerly much 

 used medicinally. 



2. IiYC'OPUS, Tournef. GIPSY-WORT. 



Marsh herbs. Leaves toothed or pinnatifid. Whorls axillary, dense, 

 many-fld. ; bracts foliaceous ; bracteoles minute. Flowers small, sessile 

 honeyed, proterandrous. Calyx campanulate, equal, 4-5-toothed ; throat 

 naked. Corolla short, campanulate, equal, 4-5-fid. Stamens, 2 upper 

 imperfect, with capitate anthers or ; 2 lower fertile, distant, anther-cells 

 parallel. Style 2-lid, lobes flattened. Nutlets dry, smooth, truncate, 

 narrowed below, margins thickened. DISTRIB. Temp, regions ; species 

 probably 2 with many varieties. ETYM. XVKOS and TTOVS, wolf's foot, of 

 doubtful application. 



Ii. europse'us, L. ; stem acutely 4-angled, calyx-teeth 5 subulate. 

 Ditches and river-banks from Ross southd. ; rarer in Scotland ; Ireland ; 

 Channel Islands; fl. June-Sept. Glabrous or slightly pubescent. Root- 

 stock creeping or stoloniferous. Stem 1-3 ft., tough. Leaves subsessile, 

 elliptic-oblong, coarsely serrate or pinnatifid. Whorls many ; bracts 

 smaller upwards ; flowers sessile. Corolla in., bluish-white, dotted with 

 purple, hairy within. DISTBIB. Europe, N. Africa, N. and "W. Asia, India, 

 N. America, Australia. 



3. ORIG'ANUM, Tournef. MARJORAM. 



Aromatic herbs or undershrubs. Leaves entire or toothed. Flowers 

 crowded, in corymbose cymes, honeyed ; bracts large, imbricating. Calyx 

 subcampanulate, 10-]3-nerved, 5-toothed or 2-lipped, upper lip entire or 

 3-toothed, lower 2-toothed truncate or 0. Corolla obscurely 2-lipped ; upper 

 lip notched or 2-fid ; lower spreading, 3-fid. Stamens 4, ascending, distant ; 

 anther-cells distinct, spreading. Style-lobes acute. Nutlets dry, smooth. 

 DISTRIB. Temp. N. regions ; species about 20. ETYM. opos and ydvos, 

 from affecting hilly localities. 



