Pollination ecology and reproductive potential of Jankaea heldreichii (Gesneriaceae); a tertiary relict on Mt Olympus, Greece

Jankaea heldreichii, a monotypic species of the Gloxinia family and a Tertiary relict, is restricted only to Mt Olympus (Greece). Its phenology of flowering, breeding system, mode of pollination, and reproductive potential were studied. Results showed that, although confined to a small area, this important plant species is not at present seriously endangered. Its vulnerability depends mostly on tourist pressure and uncontrolled collection.