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EXPLANATION OF THE FIGURES IN TAB. IV. 



Fig. 1. Bur sera scrrata. 



a. Front view of a flower. 



b. Back view of ditto. 



c. A peduncle with ripe berries. 



d. Transverse section of a three-seeded berry, exhibiting an 



entire seed, a divided one, and the rudiment of a third. 



e. A one-seeded berry, with part of the skin removed to 



show the arilliform pul]). 

 /". Two pyrenes, e.xhibiting the external umbilicus. 

 g. Vertical section of a seed ; — natural size. 

 h. The same, magnitied. 

 i. Seed with its integument and rhaphe. 

 ;'. Embryo viewed from the lateral and ventral sides. 

 k. Aspect of the embryo from the ventral side ; — magnitied. 

 /. Germinatino; seed. 

 m. The same more advanced. 



EXPLANATION OF THE FIGURES IN TAB. V. 

 Fis. 1- BoswelUa serrata. 



'& 



a. Transverse section of the germ ; ^^ 



b. Vertical section of ditto : J "'"* 



magnitied. 



c. The entire capsule. 



d. A transverse section of the same. 



e. A seed ;— the natural size. 



f. The same, with the integuments of one side removed. 



g. Vertical and transverse sections of the seed, exposing the 



embryo ; — magnified. 

 h. The young plant, with its many-cleft cotyledons ex- 

 panded, and converted into seminal leaves ; — natural 



size. 



3 B 2 Fis. 



