Manchineel tree, very nasty (scan from a chrome, this image probably posted five or more years ago). Rain water dripping from the leaves can cause rash and blister if it gets on you skin. Sap will damage car paint. The fruit is supposed to be sweet-tasting but the consequences of eating are extremely unpleasant. Below is extracted from the Wkipedia account:
The
fruit is possibly fatal if eaten; however, "fatalities from ingestion are not reported in the modern literature"
[9] and "ingestion may produce severe gastroenteritis with bleeding, shock, bacterial superinfection, and the potential for airway compromise due to edema. Patients with a history of ingestion and either oropharyngeal burns or gastrointestinal symptoms should be evaluated for admission into hospital. Care is supportive."