Asclepias exaltata (poke milkweed)
Images
Photo credits:
1, 2, 3. Susan Kirt
4, 5.
Carol Freeman
Links
http://plants.usda.gov/java/profile?symbol=ASEX
http://ct-botanical-society.org/galleries/asclepiasexal.html
http://www.wildflower.org/plants/result.php?id_plant=ASEX
