Tree sap

From Freepedia

Sap is the fluid inside plants that circulates food and water to various parts of the plant.

Maple tree sap is commonly used in the production of maple syrup. The sap of the rubber tree is used to make latex, which is vulcanized to make rubber.

Spruce Gum is another tree sap that was used by Anishinaabe peoples in Canada for small quick repairs to wood articles. The sap was collected and used in it's raw form. Chewed, it makes a good emergency deep woods survivial food.

Other non-tree plants also have sap, such as euphorbias (including poinsettias) and milkweeds, although the word sap is commonly only used to refer to trees.

Gummosis

Gummosis is the formation of patches of a gummy substance on the surface of certain plants, particularly fruit trees. This occurs when sap oozes from wounds or cankers as a reaction to outside stimuli such as adverse weather conditions, infections, insect attacks, or mechanical damage.