1562 



A TEXTBOOK OF THEORETICAL BOTANY 



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Fig. 1423. — Group of fruits pro\ided with hooks or spines which attach them to animals. Top 

 row: Emex aiistroUs (see next figure), Preirea zanguebarica. (Flat fruit with two spines 

 which scarcely show in the figure.) Second row : Desmodium sp., Geiim urbamim, Galium 

 aparine. Third row: Bidens tripartita, Sanicula enropaea, Xauthiiim spinosum. Bottom 

 row: Arctium neiiiorosuni. Aledicago arabica. 



