Laboratorio de Biodiversidad y Ecología del Dosel
Marie Selby Botanical Gardens
One of their pages provides an interesting discussion on "What is an epiphyte?", describing the different classes of symbiosis. My favourite line is: "Life itself resists the obscurity of our nomenclature and unsettles us by its diversity". I often feel that our lifeform categories really don't work for diversity and plasticity of our canopy flora!
Canopy in the clouds
Canopy in the Clouds is "the next generation of environmental outreach materials" and is really worth a visit.