SEED-BEARING PLANTS 
475 
is five-lobed having the shape of a broad, shallow bell. Its 
coloration 1 as viewed en masse on the bush, gave rise to 
the common name "calico bush," popular in certain locali- 
FIG. 359.- Common milkweed, Asdepias syriaca. (Photo by Elsie M. 
Kittredge.) 
ties. The corolla has ten pouches, each of which con- 
tains one anther borne on a recurved filament. When 
an insect alights on the flower the anthers become loosened 
1 Coloration = color pattern. 
