THE AMERICAN BOTANIST 



57 



In many parts of the Northern States, there is anotlier 

 yellow-flowered species known as sundrops (Oenothera frnti- 

 com). It has deep yellow flowers that belie the name of even- 

 ing primrose by opening" in the morning- and remaining spread 

 throughont the day. It is a perennial and is well worth culti- 

 vating in the flower garden. Many of the western species in 

 this group have white flowers and are also clay bloomers. This 

 is true of Oenofliera pallida in which the blossoms are three 

 or four inches across and produced in great profusion for a 



month or more in late spring. By the middle of the afternoon 

 the flowers close and a new set take their places the following 

 morning. This plant will grow in any kind of soil and is not 

 much harmed by drouths. Like the other members of its 

 family it is a lover of the sun. Even the night-blooming species 

 prefer to grow in full sunshine. 



A species with still larger flowers is Oenothera speeiosa. 

 This is a plant of the plains with flowers that open late in the 

 day and close the next morning. It is often found in cultiva- 



Blossoms three or four inches across. 



