FAMILIES OF FLOWERING PLANTS 118 
CHAPTER XIX. 
Order Rhoedales or Papaverales 
This group is characterized by the regular flowers, usually 
with both calyx and corolla. The stamens are hypogynous; the car- 
pels two or more, united into a compound ovary. The plants: are 
almost all herbs, with a watery or milky and 
often pungent juice. The order includes six 
families, the Papaveraceae, Cruciferae, To- 
variaceae, Capparidaceae, Resedaceae and 
Moringaceae. 
Family Papaveraceae. Poppy Family. 
Contains about 25 genera and 200 species, of 
wide distribution, but most abundant in the 
north temperate zone. They are herbs or 
rarely shrubs, with milky juice, alternate 
leaves, and solitary or clustered flowers. The 
sepals ore usually only two, and caducous, 
that is, they fall as soon as the blossom ex- 
pands. The petals are from 4 to 6; stamens 
few jto many; ovary one-celled, capsular in 
fruit. 
The Poppy family furnishes us with a 
number of highly ornamental plants. The 
true poppies (Papaver) are natives of the Old 
World, and have been so much improved by 
long cultivation that we now have varieties in 
all shades of red, white and yellow, with 
single, semi-double or very double flowers, in 
both annuals and perennials. The Califor- 
nia poppies, which are the delight of every 
visitor to the Pacific coast, belong to the 
genus Eschscholizia; they have finely dis- 
sected leaves and yellow or orange flowers. 
In this region also occur several shrubby 
genera, like Romneya and Dendromecon. The eae ety see 
prickly poppy (Argemone) 1s introduced ocarpus curvipes) about two-thirds 
from the tropics as a weed in certain parts of tural size. Original. 
the country, while the bloodroot (Sanguinaria Canadensis), shown in 
Fig. 95, is familiar to everyone. 
A group of closely related genera, comprising the Fumariaceae or 
Fumitory Family, has been included by recent authors among the pop- 
pyworts. e They may be known by the irregular flowers, having one or 
