MICHIGAN WEEDS. 



331 



Fig. 69 (62). 



Thyme-leaved Sandwort. Arenaria ser- 

 pyllifolia L. A light-colored annual, slender, 

 much branched and spreading, roughish, 5-15 

 cm. high; leaf stems short, blades ovate, acute, 

 4-8 mm. long; flowers small, white, numerous. 

 Sandy soil. Introduced from Europe. 



Fig. 70 (63). 



Larger Mouse-ear Chickweed. Cerastium 

 vulgatum L. Annual or biennial, clammy- 

 hairy, tufted, spreading, 15-40 cm. high; leaves 

 mostly oblong, 12-20 mm. long; flowers small, 

 white in loose compound cymes. Fields and 

 gardens common. Introduced from Europe. 



Cerastium arvense L. and its variety oblong- 

 ifolium, also C. viscosum and perhaps other 

 species are occasionally met with, but, as yet, 

 they are of little importance. 



