DIV. II 



ANGIOSPERMAE 



681 



presence or absence of secondary ridges or vittae serve to distinguish the fruits, 

 and are indispensable aids in determining the species. Since many of the 

 fruits are employed in medicine or as spices, while others are poisonous, their 

 distinction becomes a matter of importance. The endosperm of the seeds contains 

 a fatty oil as reserve material. 



FIG. 726. 1, Ocnanthefistulisa (A nat. size). 2, Group of fruits. 3, Single fruit (enlarged). 



Poisosocs. 



In the following genera the endosperm is flat or slightly convex on the ventral 

 side (Fig. 723, 1, 2). Pimpinella, Burnet-Saxifrage. P. anisum, Anise, is an 

 annual plant, the seedlings of which exhibit increasing subdivision of the lamina 

 in successive leaves. Carum carvi, Carraway, has long been cultivated (Fig. 

 724); leaves bipinnate, the lowest pinnae resembling stipules. The large lower 

 pinnules are usually placed horizontally on the vertical rachis of the leaf; the 

 terminal pinnules are simple and linear. The terminal umbel, the flowers of 



