Date: June 8, 2013 . Location: Chatfield Park (map)
| Classification Hierarchy | |
| Kingdom | Plantae |
| Clade | Tracheophytes |
| Clade | Angiosperms |
| Clade | Eudicots |
| Clade | Asterids |
| Clade | Gentianales |
| Family | Apocynaceae |
| Subfamily | Asclepiadoideae |
| Tribe | Asclepiadeae |
| Genus | Asclepias |
| Species | Asclepias quadrifolia |
Date: June 8, 2013 . Location: Chatfield Park (map)
Scientific Name: Asclepias quadrifolia
Common Name: Fourleaf milkweed
Origin: Native
Notes: Rare to infrequent in SE Iowa.
Additional references: 1, 2, 3, 4, 5.
