18 KANSAS UNIVERSITY SCIENCE BULLETIN. 



of a simple,, bractless raceme, and the tip of the large stamen 

 always points toward the axis of this raceme, the flowers on 

 the opposite sides of the raceme have both the stigma and the 

 pores of the large stamen turned in opposite directions. 



Professor Todd says: "The flowers are arranged on simple, 

 bractless racemes which extend in a horizontal position." The 

 material examined by the writers does not quite agreee with 

 this observation, the most of the racemes extending upward at 

 a considerable angle. Ten racemes from different plants were 

 selected at random and their angle above the horizontal taken. 

 From the table, it will be noted that the nearest approach to the 

 horizontal is fifteen degrees above, one raceme is vertical, and 

 the average of the ten is fifty-seven degrees above the horizontal. 



The terminal portion of the raceme, bearing the buds, is 

 strongly decurved, so that unopened buds obstruct in no way a 

 clear view of the conspicuous flowers, which thus appear to be 

 terminal. The racemes, when in flower, are so far to the out- 

 side that the flowers are very little screened by the foliage, 

 whose dark green background renders them more conspicuous. 



The fact that the racemes extend upward at some angle from 

 the horizontal, by bringing the flowers above the foliage, renders 

 them more conspicuous. 



The terminology used throughout this paper is the same as 

 that suggested by Professor Todd. Those flowers in which the 

 pistil as a whole extends towards the right hand, facing in the 

 same direction as the flower, will be called right-handed, and 

 those in which the pistil as a whole extends toward the left, 

 left-handed. It will be seen that, since the tips of pistil and 

 large stamen approach each other, as above described, the tip 

 of the pistil in a right-handed flower turns considerably toward 

 the left, and vice versa. The flowers on the right-hand side of 

 the raceme, as we pass out from the central axis of the plant, 

 are always left-handed, and those on the left side, right-handed. 



Professor Todd found from the examination of a small series 



