The palo de vaca, or "cow tree," grows on rocks in Venezuela, South America.
Then he explained to the bewildered Will that the cream was the sap of the cow tree.
Then there is the cow tree, which yields a delicious creamy milk.
This he regards as identical with the cow tree of Caracas, of which Humboldt has given so graphic a description.
Another remarkable tree seen in the tropics is the cow tree, the palo de vaca, or arbol de leche—the milk tree of the natives.