110 lAIEDICIXAL HERBS AND POLSOXOUS PLANTS 



t 



— Spe<irmiut, the variety mostly 



in request for culinary purposes, is easily grown in good, 

 rather moist soil. Propagation is effected by division of 



the clumps in early spring. The clumps are set about 



9 inclies apart. 



The cultivation of 



Peppermint may be 

 accomplished in the 



same 



way 



It is 



advisable to water 

 the beds well in 

 dry weather, and 

 to top-dress with 

 fresh soil once a 



year. 



White 



HOKE- 



Fig. 60.— White Horeliouiid {Marruhium vidgare) 



a, Corolla opened. 0, Flower. c, Calyx showing 



hooked teetU. 



HOUND (Afai^ni' 

 bium vnlgare). 

 The leaves and 

 tops of the White 

 Horehound are 

 vised to make a 

 syrup which is ex- 

 tensively employed 

 in making upcough 



mixtures. The out- 

 standing]: features 

 of the plant are the 

 following:: 



1. The whole plant is covered with a ivoolly down. 



2. The leaves are wrinkled. 



3. The flo\^'ers are small and white. 



4. The ten calyx-teeth are sharp and hoolced (fig. 69). 

 This herb contains a bitter crystalline principle called 



murruhin, also a little volatile oil and tannin. 



