212 MISSOURI BOTANICAL GARDEN. 



anthers have probably the greatest relative length in the 



family. 



The floral structure of the Liliaceae and Aniaryllidaceae 



meral terms. We may, 



d in g 



lie Ami 



habit of the perianth may perhaps best be described as in- 

 fundibuliform, while in the Liliaceae it is more frequently 

 patent or campanulate. In the Amaryllidaceae the four 



d 



S 



aceae there are many genera with patent or broadly cam- 

 panulate perianth and in some of these the filaments are 

 reduced in length, and the anther is of the more elongate 

 form commonly seen in the apically dehiscent genera. 



Sollya and Cheiranthera are quite aberrant forms in the 

 family Pittosporaceae in which they belong, both as 

 regards form of perianth and structure of stamens. 



In the Leguminosae the apically dehiscent genera belong 

 to a group in which the perianth is generally patent, but 

 they differ in the relative length of the filament and anther 

 and in the insertion of the anther upon the filament. 



The Treinandraceae contains only apically dehiscent 



genera and species. 



The sterculiaceous genera which have been mentioned 

 as having anthers opening at least at first with pores are 



marked by a great similarity of structure, a greater similar- 

 ity than that between the apically dehiscent genera and 

 the other genera of the Lasiopetaleae, to which all of the 

 apically dehiscent genera belong, in which the anthers open 

 from the first by longitudinal slits. The Lasiopetaleae 

 itself differs very essentially in its floral structure from 

 other tribes of the Sterculiaceae so that there can be no 

 question as to the unique structure of these forms in this 



family. 



TheOchnaceae has the elongate, basifixed anthers of the 



Solanum-Cassia type and most of the genera have anthers 



