The dehisced fruit of common milkweed, "Asclepias syriaca", in early fall.
Native Hibiscus, commonly called swamp rose mallow ("Hibiscus moscheutos", family Malvaceae).
"Rubus odoratus", commonly called flowering raspberry, in the rose family (Rosacea). This is my favourite stage of this flower. It has been pollinated, and it is dying. The bright pink petals have fallen off. It is in process of becoming a fruit!