154 YELLOW AND ORANGE 



1. COMMON EVENING PRIMROSE: Even- 

 ing Primrose: Night Willow-herb. 



Oenothera biennis. 



Evening Primrose Family. June Sept. 



A plant 1-5 feet high, found in fields and 

 roadsides. Labrador to Gulf, west to Rock- 

 ies. 



FLOWERS Yellow, 4-parted, 1-2 inches across, in 

 terminal spikes, opening in the even- 

 ing. 



LEAVES Alternate, lance-shaped^ mostly seated 

 on stem, obscurely toothed. Plant stem 

 leafy, hairy, more or less branched. 



2. SUNDROPS: Common Sundrops: 



Oenothera frutlcosa. 



Evening Primrose Family. May July. 



Plant 1-3 feet tall, found in fields, roadsides. 

 New England to South Carolina, west to In- 

 diana and Michigan. 



FLOWERS Yellow, % 1 inch across, 4 divisions, 



terminating stem and from the leaf 



angles. Seed pods ribbed and winged. 



LEAVES Oblong to lance-shaped, minutely 



toothed. 



0. pumila is a similar but smaller species. 

 Leaves toothless, basal leaves broader at the 

 tip. More western in its range. 



1 i 



NOTES. 



