CHAPTER II 



CALYGIFLOR^ 



T N the sub-class Calyciflorse the stamens are in- 

 -■- serted on the calyx or disc, being perigynous on 

 a free receptacular tube, or if adherent, on a con- 

 tinuation of the tube beyond the ovary, with the 

 ovary superior as in the Spindle Wood group, Buck- 

 thorn group, some of the Pea group. Rose group. 

 Stone Crop group. Saxifrage group. Sundew group, 

 Loosestrife group ; or epigynous with epigynous 

 stamens on an adherent receptacular tube not pro- 

 longed beyond the ovary, and with an inferior ovary 

 in the Willow Herb group, Mare's Tail group, White 

 Bryony group. Purslane group. Gooseberry group. 

 Ivy group, Hemlock group, Dogwood group. 



The flowers possess both calyx and corolla. The 

 sepals may be distinct or united. The petals are 

 usually distinct. Except in the Pea group the flowers 

 arc regular. 



The stamens are hypogynous in the Saxifrage 

 group, in Grass of Parnassus, and amongst the Sun- 

 dews. They are epipetalous in some of the Stone- 

 crops. In some of the Pea group they are nearly 

 hypogynous. 



