THE GENERAL CHARACTERS OF SEEDS 



461 



Pigure'323A 



Figure 323B 



Fig. 323. A. Kvening Primrose ^Oenothera bfennis). A, different views of 



seed. B, cross section of seed. C, natural size. 



B. Water Hemlock (.Cicuta macalata). 



(After Hillman, Bull. Mich. Agr. Exp. Sta.) 



Wild Parsnip {Pastinaca sativa L.). 



"Seeds", carpels one-quarter in. in length, thin, eireidar or 

 oblong; color light or dull yellowish brown; lighter conspicuous 

 margin, ribs brownish or reddidi ; apex notched, with a conspicuous 

 remnant of the style; oil tubes four, alternating with the ribs; 

 inner face concave, with a central longitudinal ridge and one oil- 

 tube on each side. 



Wild Carrot {Dauciis carota It.). 



Fruit one-eighth in. long,^^ oblong, flattened dorsally ; carpel with 

 5 slender, bristly, primary ribs bearing numerous spines, and 4 

 secondary wings; color whitish yellow; oil tubes one under each 

 row of spines, and two between the ridges of the inner face ; seeds 

 commonly found with spines broken off. In alfalfa and clover 

 seeds. 



