NATURAL ORDERS 93 
There are several species of poppy ; the two most common 
in our fields are Papaver Rheas and Papaver dubwum, the 
_long-headed poppy. This may be recognised by the longer, 
more oblong, fruit and the stiffer hairs. 
| ~The Horned Poppy (Glaucium) has thick, fleshy 
leaves, two carpels, which are lateral, and a long 
thin capsule, which, when ripening, develops a thick spongy 
replum, that persists after the 
valves of the fruit have fallen off. 
The Greater Celandine (Cheli- 
donium) has also two carpels and a 
fruit very much like that of a 
wallflower, except that there is no 
replum, as in the Crucifers (“ Ele- 
mentary Botany,” p. 62). The milk 
of this genus is yellow. | 
The Escholtzia, introduced from 
California, is now commonly culti- 
vated in our gardens. ‘The flower 
is perigynous, and has two sepals 
united to form a cap. The two 
other genera, the Welsh Poppy 
and Reemeria, are not common in 
England. 
Genera. 

Ea tee: 1. The plants are all 
istics of the herbs with latex. 
Order. Fic, 61.—FRruit oF HoRNED 
9. The flowers. are Poppy. 
regular. , 7 
3. The calyx consists of 2 sepals, the corolla of 4 petals 
arranged in 2 whorls. 
4, The stamens are numerous. | 
5. The gynecium consists of 2 or more carpels, with 
parietal placentation. 
ae Field Poppies and the Greater Celandine have 
ollination. ae 
no honey, but are visited by small insects for the 
sake of the pollen. In the poppy the anthers, which stand 
close round the stigmas, dehisce betore the flower opens. 
