CALYCIFLOR/E 183 



The petals are absent in some of the Rose group, 

 Willow Herb group, Loosestrife group. Saxifrage 

 group, Mare^s Tail group, and Mistletoe group. In 

 some of the Holly group, White Bryony group, and 

 Stonecrop group the petals are more or less united. 



In Crassulacese, Cucurbitaceae, and Ribesiaceae the 

 stamens and petals are not perigynous, though placed 

 in that section. 



It has been shown that in the Water Lily group 

 and in some of the Pink group the stamens are 

 apparently perigynous to epigynous. 



There is no disk in Aquifoliaceae or Ilicineae, in- 

 cluded by Hooker in the Thalamiflorae. In the Mare's 

 Tail group and White Bryony group the flowers are 

 unisexual. The flowers are irregular, papilionaceous 

 in the Pea group, and the stamens are monadelphous 

 or diadelphous. 



22. The Spindle Wood Group. 



Of the order Celastracese there is only one British 

 species — the Spindle Wood — which is described 

 here. 



There are about one hundred and eighty species 

 and thirty-eight genera. These are natives of the 

 Old World, and the Southern Hemisphere, the 

 warmer parts of Europe, North America, Asia, Cape 

 of Good Hope, Chili, Peru, and New Holland. 



The members of the Spindle Wood group are trees 

 or shrubs. The leaves are simple, opposite, or 



