PATAGONIAN EXPEDITIONS I BOTANY. 



EXPLANATION OF PLATE XVIII. 



PAGE 



A. DRABA MAGELLANICA Lamarck . 445 



Above in the center is shown the general habit ; of natural size ; and on the 

 left a specimen in frtiit. 

 .f, flower. 

 g, gynecium. 

 h, hairs. 

 p, petal. 

 sp, sepals. All these are magnified. 



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B. DRABA HATCHERIANA Gilg, n. sp. . 444 



The central figure shows the general habit ; of natural size ; above is a flower- 

 bearing branch, slightly magnified. 



e, essential organs. 



f, flower. 

 p, petal. 



sp, sepals. All these are magnified. 



(VOL. vm) 



