Asclepius
syriaca
Milkweed
Asclepia
Interesting info and more photos:
Dan Teglia: "Like the majority of the milkweeds, this species bleeds a profuse amount of milky sap when injured. The plant is toxic if ingested."
Dan Tenagle - missouriplants.com
Dan Teglia - missouriplants.com
You
ought to know:
Area: dry
Height: 2-4 feet
Frequency: low
Blooms: Late Spring