SANDY SOIL 



I. Carolinian W^hitlow-grass 



Draba Caroliniana. — Family, Mustard. Color, white. 

 Leaves, alternate, hairy, oblong, sessile. Time, March to May. 



Sepals and petals, 4. Pod, smooth, broad, on a short stalk. 



A small plant, less than 5 inches high, with little white flowers 

 in a raceme which becomes about i inch long in fruit. Some- 

 times the petals are w^anting. Not so well known as, but earlier 

 than, the common whitlow- grass. This species, coming into 

 flower in March, is among our earliest bloomers. 



Sandy and waste fields from Massachusetts southward, and 

 westward to Minnesota. 



2. Frostweed 



Helidnihemum Canadense ("sun-flower," so called because 

 the flowers open only in sunshine). — Family, Rock-rose. Color, 

 yellow. Leaves, alternate above, opposite below, simple, nu- 

 merous, lance-shaped to oblong, hoary underneath. I'ijiie, 

 summer. 



Sepals, 5, 2 of them long, thin, and bract-like, hairy or whit- 

 ish and downy. Petals, 5, sometimes none. Stamens, t^\o id, 

 or numerous. Pistil, i, with a 3-lobed, sessile stigma. Stem 

 very hoary ; at first simple, later branched. 



This singular plant produces two kinds of blossoms, the earlier 

 in July, a large, 5-petalled, yellow flower opening only in sun- 

 shine, dropping its petals the next day, i inch across, with many 



