Common milkweed (Asclepias syriaca) pod with dehiscing seeds. Binky Lee Preserve, Chester Springs, PA.
Swamp milkweed (Asclepias incarnata) seed. Swarthmore, PA.
Coneflower (Echinacea purpurea) infected with aster yellows phytoplasma (Acholeplasmatales). Typically transmitted by the aster leafhopper (Macrosteles quadrilineatus). Swarthmore, PA.
