28 LYCOPUS. No. 61. 



spinose segments^ seeds shorter and obtuse, not crenu- 

 lated. As they are also medical, I shall give their cha- 

 racters. 



1. Lycopus vulgaris. Pars, or L. sinuahis E. (JEuro- 

 peus L.) Smooth, stem branched, with four sharp an- 

 gles, leaves crowded, sinuate, lanceolate, with long 

 acute teeth, both ends attenuated. Sa^eral varieties: 

 J. Trachigonus with rough angles, teeth lanceolate. 

 2.. Eepens (Lye. sinuahis of Elliot.) Creeping, leaves 

 rugose, deeply sinuated,^ 3. ^ngustlfolius. Leaves nar- 

 row lanceolate, .upper ones less sinuated. 4. Latifottits. 

 Leaves broad, lanceolate, sinuate, serrate. Common to 

 Europe and America. 



2. Lycopus heterophyllus, Raf. {Exaltatus, Elliot, not 

 L.) Stem tall and branched, angles acute, leaves petio- 

 late, pinnatifid, segments narrow, subserrate, upper 

 leaves sessile, linear lanceolate, subserrate. Varieties 

 1. Bipinnatijidus. 2. J)issecius. 3. Angustatus. 



3. Lycopus lo7igifoHits, Raf (angustifolms, Elliot.) 

 Stem simple, hispid, angles striated and acute,- all the 

 leaves sessile, linear, lanceolate, elongated, remote ser- 

 rate, attenuated at both ends. Yar. 1. Gracilis. 2. Li- 

 nearifolius. In the South and West. 



4. Lycopus paucijloms, Raf. {Pennsyhanicus, Mo-.) 

 Stem nearly simple and smooth, angles striated and 

 acute, leaves all similar, lanceolate, remote, serrate, sub- 

 petioiate, acuminate, whorls pauciflore. Yar. 1. Hirsu- 

 tus. 2,Flexuosus. 



5. Lycopus uni/iorus, Mx. Leaves lanceolate, sub- 

 serrate, smooth, suckers pecumbent, flowers nearly 

 solitarj. -^ 



6. Lycopus obtusifoUus, Vahl. Leaves lanceolate, 

 obtuse, with remote obtuse teeth. These two last are 

 boreal plants. 



All the species are estival plants, blossoming- in sum- 

 mer, and growing near water, ditches, creeks, swamps, 



+?f*n 'M-T''"^ ^"^ ^™^'^^ *^ ""^*' their properties are 

 totallT different, not being at all stimulant nor heating. 



^Lvl« V'v^ ^^""^ ""^""^^ glandular dots under tlfe 

 Tott^a Ji vS.^^^ ^"^^^ and a peculiar essential oil. 



tieV it 5» :,^-f^^^/' J*'^ P^^^^^ °^^'« their active proper- 

 ties. It la easily soluble in hot or boilinsr water. Thev 



