136 MISSOURI BOTANICAL GARDEN. 



Oenothera semilata DeVries. 



Taller than 0. lata. Bud cones less thick than 0. lata; 

 inflorescence looser and longer; leaves smaller and less 

 rounded at the point. Produces pollen, but less than 

 0. Lamar ckiana. 



Oenothera scintillans DeVries. 



Die Mutationstheorie. 1:171. /. -^7, flowering shoot; 1:272. /. 81,82, 

 rosettes; 1 : 321. /. 100, fruits; 1 : 384. -pi. 6, colored; 2 : 496. -pi 3, 

 colored. 



Seedling leaves broadest in the middle, small with broad 

 petiole and midvein, very smooth and glossy, dark green. 

 Leaves small, green, smooth, with broad midvein, whitish. 

 The bud-bearing portion of the stalk above the flowers is 

 longer than in other forms. The capsules are short and 

 thick, half normal size or less; seeds small; fruits smooth. 



Oenothera elliptica DeVries. 



Die Mutationstheorie. 1 : 281. /. 83, shoot, rosette and rosette leaf; 1 : 282. 

 /. 84, flower natural size. 



Seedhng leaves broadest in the middle, very long with 

 long petiole. Stem short and weak. Leaves very small, 

 lanceolate, long and narrow, often ten times longer than 

 broad. Capsules long and thin. Petals elliptical. 



Oenothera sublinearis DeVries. 



Die Mutationstheorie. 1 : 285. /. 86, whole plants; /. 86, rosette leaf; /. 87, 

 petals. 



Seedling leaves of equal breadth throughout the greater 

 part of their length, whitish, httle crinkled, scarcely narrowed 

 at the stem, nearly grass-like. Strongly branched (less than 

 one metre high), branches standing out stiffly, mostly very 

 weak. Leaves very small, nearly linear. Capsules long and 

 thin. Petals elliptical. 



One other form, whose position is doubtful, may be in- 

 cluded in this list. 



