Sida spinosa L.
Family - Malvaceae
Stems - No info yet.
Stem and stipules.
Leaves - No info yet.
Inflorescence - No info yet.
Flowers - No info yet.
Flowering - June - October.
Habitat - Fallow and cultivated fields, pastures, roadsides, railroads, waste ground.
Origin - Native to the New and Old World tropics.
Other info. - This weedy species can be found throughout Missouri. The plant can be identified by its small yellow flowers, short peduncles, and thin stipules. Stipules at the base of mature plants become hardened and spine-like, giving the plant its common name "Prickly Sida."
Photographs taken off Lee Rd 10, Lee County, AL., 8-28-04.