in the Order of Cucurbitacece. 233 



lese (Fig. 12.), there are twelve rows, each edge of such recep- 

 taculum having supported two rows. 



The seeds, so far as I have observed, are horizontal, except 

 in the Trichosanthes called Theba, already mentioned, in which 

 they are placed vertically ; but this plant apparently differs a 

 great deal from all the others that I have seen, in having a kind 

 of bilocular nuts in place of seeds, one cell in each nut being 

 empty. Besides, the seeds of this plant are covered with a 

 spongy albumen, unless, from analogy, this may perhaps be con- 

 sidered as a thick inner membrane investing the seeds, while the 

 nut may be called a thick outer integument, several other spe- 

 cies having the outer membrane crustaceous and brittle. In ge- 

 neral the seeds are flat ; but in several there is a thick edging, 

 around which, in the Bryonia laciniosa, is enlarged into a ring 

 somewhat like the setting of a reading-glass. The embryo is 

 straight, with thick cotyledons, and a small radicula placed at the 

 end next the receptaculum. 



END OF PART I. 



VOL. XI. PART I. 



Gg 



