90 MYSTERIES OF THE FLOWERS 



(1) Twenty-nine flowers on two stocks with 

 pollen of their own stock. All fell off in a short 

 time. 



(2) Thirty flowers on the same two stocks with 

 pollen from others growing nearhy. Only two 

 flowers developed fully, but most of them remained 

 longer upon the stem than in the previous case, and 

 many showed a commencing enlargement of the 

 ovary. 



(3) Five flowers on one stock with pollen from 

 another growing at a distance. All were fruitful. 



As our trumpet-vines in the North are few and 

 far between, they do not get that crossing of the 

 pollen from vines widely separated, so necessary 

 for making seeds. It is stated by Miiller that the 

 valve on the stigma of the trumpet-vine closes per- 

 manently as soon as it has received any pollen. 



!MoN KEY-FLOWER — Mwiiilus rhigens 

 June-Sept. 



This little flower, whose saucy corolla seems to 

 betray a disposition toward quaint, odd habits so 

 much resembles a face that we must speak of the 

 pistil as a "tongue" — a most sensitive little tongue 

 with a slit or division at its tij). At the taste of the 

 pollen which it desires, this slit in the tongue closes 

 and holds fast the dainty morsel. 



