128 VASCULAR PLANTS. 



3. Prosartes, Don. 



Perigonium 6-phyllous, cainpanulate; seg- 

 ments saccate at the base. Stamens 6, attached 

 at the base of the segments, and deciduous 

 with them. Anthers adnate, dehiscing laterally. 

 Ovary 3-locular; loculi 2-ovulate; style decidu- 

 ous. Loculi of the berry 1 — 2-seeded. 



2£. leaves alternate, sessile, amplexicaul. 



4. Trillium, L. 



Perigonium 6-phyllous; 3-external segments 

 herbaceous, persistent; 3 internal petaloid, 

 marcescent. Stamens 6; anthers linear, later- 

 al: connective broad. Ovary 3-locular, oo-ovu- 

 late; styles 3. Berry go -seeded. 



U . leaves 3, verticillate, reticulate. 



Family xcyi. Liliaceae. 



Anthers introrse. Ovary 3-locular. Testa 

 of the seed crustaceous. 



1. Clintonia, Raf. 



Perigonium 6-phyllous, campanulate, decid- 

 uous. Stamens J3, inserted on the base of the 

 segments; anthers versatile. Style slender, de- 

 ciduous. Fruit a berry. 



% . flowers on a scape. 



2. Chlorogalum, Knnth. 



Perigonium G-phyllous; segments linear, per- 



