32 



THE MONTANA EXPERIMENT STATION. 



26. CAPSELLA BURSA=PASTORIS, Moench. Shepherd's Purse. 



A common annual of yards, gardens and waste places. Blooms 

 throughout the season. A ioot or two high with white flowers 

 and a triangular pod. A European introduction. Seeds develop 

 a mucilaginous coat when wet and thus facilitate their dispersion. 



27. *CERASTIUM NUTANS, Raf. 



A small inconspicuous chick weed with sticky foliage and 

 curved pods notched at the orifice. Occasionally introduced from 

 the East. In waste places infrequent. 



28. *CERASTIUM YULGATUM, L. Mouse-ear Chickweed. 



Found very troublesome in lawns at Kalispell, where it forms 

 patches and crowds out the grass and its perennial habit makes it 

 difficult to exterminate, except by dig- 

 ging up and removing every plant. nw» 

 Also in waste places at Thompson Falls 

 and Borax; coming in from the West. 



29. CHENOPODIUn ALBUH, L. 



Lamb's Quarter. 



A common and troublesome annual in 

 waste places and cultivated ground in 

 nearly every part of the state. It fairly 

 takes uncultivated fallow land in many 

 localities. An Old World species. [Fig. 5] 



30. *CHENOPODIUM BOTRYS, L. 

 Jerusalem Oak. 



A bitter, ill-smelling annual from Eu- 

 rope locally established in waste 

 places at various points in the state, 

 and seems well adapted to our climate. 

 Resembling the preceding species in size 

 and appearance, but the leaves are more 

 deeply lobed. 



Chcnopodiutn 

 L. Vs nat. size. 



