The reaction is similar to poison ivy, except that the skin usually peels for 2-3 weeks. Sapium has simple, shiny, ovate leaves with a pointed tip, and a pair of glands on the petiole just below the leaf blade. There is a shrub with glassy, stinging hairs that grows in and near streams - just where you are likely grab at vegetation to catch your balance on the slippery rocks. Comecladium bushes also grow near streams, and are highly toxic members of the Anacardiaceae. These have holly-like, shiny leaves with bristle tips.
Alcohol is a solvent for the toxin and can be used to remove it, but it can also spread the toxin.
If you are slimed by sticky grass seeds, do not spread to slime to your face - it can elicit an allergic reaction. Saw grass is especially common in the Bisley Watersheds, and lives up to its name. There is only one mildly toxic snake here - Alsophis. Only one researcher has been bitten, and that was because he had captured the snake and was letting it chew on his thumb to keep it occupied. Introduced rats and mongooses are common, but are not dangerous unless they have rabies.