SUPPLEMENT. 
THE FAMILIES OF FLOWERING PLANTS 
By CuHarues Louis Potuarp. 
CHAPTER XXV. 
Order Parietales, 
The name of this order is taken from a Greek word meaning wall, 
on account of the fact that the ovule-bearing surfaces (placentae) are 
attached to the walls of the ovary instead of forming a separate column. 
This condition may be plainly 
seen by sectioning the capsule 
of a violet or pansy. The 
ovary in this group is com- 
pound, and the stamens almost 
always numerous. It contains 
thirty-one families, many of 
them small and not well 
known; the most important 
ones are the Theaceae, Hyper- 
icaceae, Guttiferae, Cistaceae, 
Violaceae, Dipterocarpaceae, 
Passifloraceae, Caricaceae and 
Begoniaceae. 
Family Dilleniaceae. Dil- 
lenia Family. A group con- 
taining about 30 genera and 
250 species, consisting of trees 
or shrubs widely distributed 
in Australia, Indis, and some 
parts of South America. They 
may be distinguished by the 
Fig. 152. Flowering shoot of Di/lenia Indica, greatly 
‘reduced. Redrawn from Engler. 
five persistent sepals, borne in two rows, the five deciduous petals, and 
the numerous stamens, frequently bent over to one side. The fruit 
consists of several carpels, and is sometimes edible. Some of the trees 
