Bedstraw

Classification:
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order:
Family: Rubiaceae (bedstraw family)
Genus species: Gallium aparine

Plant Description:
Scratchy prickles on stems. 
Leaves are 1 to 3” long, in whorls of 8. 
Tiny white flowers are on stalks from leaf axils. 
Stems are square.

Photo sources:
Vanessa Fox, DePauw University