TY, Stush. Stapelia has latex, as does Huernia. Many edible plants (plants with edible parts, or parts that can be processed to be edible,) have latex in them, like sweet potatoes, figs, papaya, cashew.
Hope your rash continues to recede!
Some of the list I pasted are toxic by contact with sap, some by ingestion, some via both. Not everyone has the same sensitivities.
