have one or two more to offer of a more special nature. There 

 really is one grain of coj'n in the midst of his chaff". He states that 

 certain supposed (Enotheras have their chalaza bordered by a fringed 

 margin. This is obviously an additional organ and a special type 

 of structure : it is the beginning of the feathei-y appendage of the seed 

 of Epilobium, but it is incapable of performing the office of buoying 

 lip the seed in the air so as to enable it to be dispersed from place to 

 place. I find the structure to be as Mr. Spach states, and that the spe- 

 cies collected by the character are CE. Romanzovii, purpurea, and the 

 like, which will not intermix with the true Evening Primroses, and 

 which have quite a peculiar habit. Among other things, their 

 flowers have no tendency to become yellow. To these plants the 

 name of Godetia may be assigned. But Mr. Spach refers to the 

 same type of structure, QEnothera densiflora, and the species now 

 before me, making them however into another genus, which he calls 

 Boisduvalia. As I have the seeds of both at this moment under 

 my microscope, I can safely affirm that neither of these species 

 has any trace of a fringed border to the chalaza, and that conse- 

 quently the most remarkable part of their supposed character has 

 no real existence. Mr. Spach adds to these marks of distinction, 

 that of the stamens which are opposite the petals being very short 

 (brevissima) ; this is hardly true of CE. densiflora, and it is altogether 

 untrue of CE. humifusa. Boisduvalia may, therefore, be consigned 

 to the same fate as the rest of Mr. Spach's new genera. 



