267 



som, and the delicious sweets which they yield are eagerly sought 

 after, all other luxuries are held .at a discount. Bees appear to 

 be very fastidious, so to speak, in their tastes ; seldom noticing 

 plants of inferior qualities, except as necessity demands. 



the trace of one, from this second flowering is to be seen. During 

 repeated examinations of these secondary clusters, there was ob- 

 served nothing in the structure of the stamens and pistil of any 

 flower, to prevent self-fertilization, provided they had come to ma- 

 turity at the same time. There was abundance of pollen in the 

 anthers, and the stigmatic surface of the pistils was open and coated 

 with a viscid secret ion. The presence of bees and the development 

 of fruit in a few instances where aided by those insects, associated 

 with the opposite condition, to wit, the absence of bees and the 

 consequent absence of fruit, the flowers being ready but the bees 

 being unwilling, are incontrovertible evidence of the fact that bees 

 are essential to the fertilization of Wistaria Sinensis. 



BOTANICAL OBSERVATIONS IN SOUTHERN UTAH. 



No. 4. 



The following list comprises the collection of plants made in 

 the above district, in the season of 1874. 



The numbers given correspond to those affixed to the distributed 

 sets, and referred to in the previous papers. Where no numbers 



though belonging to this locality, were derived from other sources 

 as indicated in the text. Where no special locality is given, the 

 valley of the Virgen in the vicinity of St. George is to be in- 

 ferred. To the notes and descriptions following any particular 

 species furnished by other collaborators, the name of the author 



