210' 



WEED FLORA OF IOWA 



Snow-on-the-mountain {Euphorbia margmata Pursh.). 



Description. — Stems stout, high, ereet, hairy or smoothish ; annual, 

 from 2-3 ft. high; leaves sessile ovate-oblong, acute; uppermost 

 leaves white, petal-like margins. 



The flowering spurge {Euphorbia corollatmJj.) with white flowers 

 in forked umbels ; long peduncles ; invohicres showy, white append- 

 ages appearing like petals; deep perennial root; is common in grav- 

 elly and sandy soils in many parts of the state, arid it is often weedy. 



Distribution. — Snow-on-the-mountain occurs from Minnesota to 

 Missouri and Colorado; also reported eastward to Ohio and South 

 Carolina. A frequent escape from gardens in Iowa; common only 

 in the western part. 



Fig. 122. Snow-on-the-MountaIn (Euphoriia marginata) . A frequent escape 

 from gardens, a. Whole plant, one-third natural size ; 6, seed capsule, 

 natural size. 



