I came upon some monarchs at a local park today, here are some of the shots i got. I have no idea what kind of bush or whatever they are on but they really seemed to like it, anyone know what it is?

Click image for larger version.  Name: Monarch1.JPG  Views: 86  Size: 149.1 KB  ID: 29159

Click image for larger version.  Name: Monarch2.JPG  Views: 81  Size: 161.9 KB  ID: 29160

Click image for larger version.  Name: Monarch3.JPG  Views: 73  Size: 193.4 KB  ID: 29161

Click image for larger version.  Name: Monarch4.JPG  Views: 65  Size: 172.4 KB  ID: 29162