Coneflower (Echinacea purpurea) infected with aster yellows phytoplasma (Acholeplasmatales). Typically transmitted by the aster leafhopper (Macrosteles quadrilineatus). Swarthmore, PA.
Black mangrove (Avicennia germinans) growing in lagoon. Isla Santa Cruz, Galápagos.
Groundsel tree (Baccharis halimifolia) with spider. John Heniz National Wildlife Refuge, Philadelphia, PA.
